changelog.rst

Changelog

2025.3.2

• drop support for py3.8

2025.3.1

Enhancements

• LFS support in github: (#1810)

Fixes

• json should be a method fo requests shim (#1814)
• don't raise if known_implementation has no given error string (#1804)

Other

• rename protocols for sync-http (#1810)

2025.3.0

Enhancements

• add pipe_file to HTTP (#1799, 1801)
• add sync http for pyodide (#1177)
• ls performance for local and detail=False (#1789)

Fixes

• dir/info consistency in dirfs (#1798)
• referenceFS async consistency (#1794, 1795)
• CI (#1793)

2025.2.0

Enhancements

• add open() to referenceFS (#1778)

Fixes

• don't make async open() in async-wrapper (#1769)
• fix CI following dask-expr upstream change (#1781)
• cope with zarr3 "Buffer" objects in referenceFS (#1784)

Other

• use itemgetter in archiveFS (#1764)
• document that newline is included in readline(s) (#1770)
• format/spelling (#1774, 1779, 1780)

2024.12.0

Enhancements

• "exclusive" mode for writing (#1762, 1756, 174+)
• "tree" text display of filesystem contents (#1750)
• async wrapper for sync FSs (#1745)
• new known implementation: tosfs (#1739)
• consilidate block fetch requests (#1733)

Fixes

• better webHDFS proxies (#
• syn FSs in referenceFS (#1755)
• don't serialize file caches (#1753)
• race condition in local ls() (#1744)
• missing/nan references in parquet (#1738)
• _un_chain kwargs (@1736)
• async _cat_file in referenceFS (#1734)

Other

• fallback implementation for _fetch_range (#1732)

2024.10.0

Fixes

• Performance of memoryFS rm (#1725)
• Performance of git FS info (#1712)
• Avoid git hex for newer pygit (#1703)
• tests fix for zip (#1700, 1691)
• missing open_async for dirFS (#1698)
• handle pathlib in zip (#1689)
• skip tests needing kerchunk if not installed (#1689)
• allow repeated kwargs in unchain (#1673)

Other

• Code style (#1704, 1706)
• allow pyarrow in referenceFS parquet (#1692)
• don't hardcode test port for parallel runs (#1690)

2024.9.0

Enhancements

• fewer stat calls in localFS (#1659)
• faster find in ZIP (#1664)

Fixes

• paths without "/" in dirFS (#1638)
• paths with "/" in FTS (#1643, 1644)
• ls in parquet-based nested reference sets, and append (#1645, 1657)
• exception handling for SMB (#1650)

Other

• style (#1640, 1641, 1660)
• docs: xrootd (#1646)
• CI back on miniconda (#1658)

2024.6.1

Fixes

• fix appending to non-dict reference sets (#1634)
• don't let generic edit info dicts (#1633)
• set https's loop before calling super (#1633)
• cached write file doesn't need to update it's size on close (#1633)
• fix JSON serialize for FSs with interior FSs (#1628, 1627)
• option to strip "password" when pickling (#1625)
• fix filecache write (#1622)

2024.6.0

Enhancements

• allow dicts (not just bytes) for referenceFS (#1616
• make filesystems JSON serializeable (#1612)
• implement multifile cat() for github (#1620)

Fixes

• implement auto_mkdir for SMB (#1604)

Other

• add doc deps to pyproject (#1613)
• re-remove test from package (#1611)
• formatting (#1610, 1608, 1602)
• change monthly download badge (#1607)

2024.5.0

Enhancements

• log hits/misses in bytes cachers (#1566)

Fixes

• SMB flaky tests (#1597)
• rsync: only delete files if there are some to delete (#1596)
• don't let files equal bytes objects (#1594)
• url_to_fs to stringify paths (#1591)
• assert types in MemoryFS (#1574)
• restore _strip_protocol signature for local (#1567)
• convert list to set when loading cache metadata (#1556)

Other

• remove mv_file (#1585)
• mv() should not swallow errors (#1576)
• change versioning template, allows easier co-install of dev s3fs (#1569)
• in ls_from_cache, avoid dounble lookup (#1561)
• expand=True in open() (#1558)
• build system to hatch (#1553)

2024.3.1

Fixes

• allow override of expand in open() (#1549)
• root handling in local file paths, fix for windows (#1477)

2024.3.0

Enhancements

• coroutines throttle to stream pool rather than batches (#1544)
• write transactions in simplecache (#1531)
• allow deep nested refs in referenceFS/parquet (#1530)

Fixes

• Fixes bug (#1476) that made open_files ignore expand=False (#1536)
• remove extra calling mapper contains (#1546)
• connection retry for SMB (#1533)
• zip64 should be on is allowZip64 is (#1532)

Other

• HTTP logging (#1547)
• url_to_fs exposed in package root (#1540)
• sort known_implementations (#1549)
• code quality/stype (#1538, 1537, 1528, 1526)

2024.2.0

Enhancements

• add 9P known implementation (#1513)
• allow TqdmCallback subclassing (#1497, 1480)
• callbacks/branching kwargs handling and scopes (#1496, 1495, 1460)
• add aluuxioFS to known implementations (#1469)
• implement pipe_file for dirFS (#1465)

Fixes

• infer compression for .lzma files (#1514)
• fix append to categorical/parquet references (#1510)
• allow for FTP servers that list with leading "total" line (#1503)
• convert FTP failure to FileNotFound (#1494)
• out of order reference fix (#1492)
• retry "backoff" response for DBFS (#1491)
• referenceFS case for scalar arrays (#1487)
• fix create_parents for SFTP (#1484)
• fix local .ls() on files (#1479)
• allow Path and similar in _expand_path (#1475)
• make lazy references editable (#1468)
• fix eq for abstract buffered files (#1466)
• fit tqdm cleanup (#1463)
• fix passing kwargs from cached file to underlying FS (#1462)

Other

• fix tests for supports_empty_directories=False (#1512)
• don't read references in init for referenceFS (#1521)
• code cleaning (#1518, 1502, 1499, 1493, 1481)
• pass through "replication" for HDFS (#1486)
• record more info for HTTP info() (#1483)
• add timeout argument to githubFS (#1473)
• add more security pars to webHDFS (#1472)

2023.12.2

Fixes

• top-level glob in ZIP (#1454)
• append mode on local ZIP files/truncate (#1449)
• restrict ":" as protocol marker to data: (#1452)
• sftp relative paths (#1451)
• http encoding in HTTP FS put_file (#1450)

2023.12.1

Fixes

• Remove trailing "/" from directory names in zipFS/archive (#1445)

2023.12.0

Enhancements

• allow HTTP size guess in more circumstances (#1440)
• allow kwargs passed to GUI to be dict (#1437)
• transaction support for writing via a cache FS (#1434)
• make cached FSs work better with async backends (#1429)
• allow FSs to set their transaction implementation (#1424)
• add dataFS (#1421, 1415)
• allow basic auth in webHDFS (#1409)

Fixes

• in referenceFS, maintain order when some keys are omitted in cat (#1436)
• nested subdirectory listing in referenceFS (#1433)
• allow "=" in webHDF paths (#1428)
• fix file mode to consistent "r+b" format (#1426)
• pass on kwargs in HTTP glob (#1422)
• allow Path in can_be_local and open_local (#1419, #1418)
• fix parent for cachedFS (#1413)
• "ends" list in _cat_ranges was incorrect (#1402)

Other

• smarter handling of exceptions when doing auto_mkdir (#1406)

2023.10.0

Enhancements

• alias "local://" to "file://" (#1381)
• get size of file cache (#1377)

Fixes

• stop unexpected kwargs for SMB (#1391)
• dos formatting (#1383)

Other

• small optimisations in referenceFS (#1393)
• define ordering behaviour for entrypoints (#1389)
• style (#1387, 1386, 1385)
• add LazyReferenceMapper to API docs (#1378)
• add PyPI badge to README (#1376)

2023.9.2

Fixes

• revert #1358: auto_mkdir in open() (#1365)

Other

• code style updates (#1373, 1372, 1371, 1370, 1369, 1364)
• update CI setup (#1386)

2023.9.1

Enhancements

• #1353, save file cache metadata in JSON
• #1352, remove some unnecessary list iterations

Fixes

• #1361, re-allow None for default port for SMB
• #1360, initialising GUI widget FS with kwargs
• #1358, pass auto_mkdir vi url_to_fs again

Other

• #1354, auto delete temp cache directory

2023.9.0

Enhancements

• #1346, add ocilake protocol
• #1345, implement async-sync and async-async generic cp and rsync
• #1344, add lakefs protocol
• #1337 add goatcounter to docs
• #1323, 1328, add xethub protocol
• #1320, in HTTP, check content-encoding when getting length
• #1303, add on_error in walk
• #1302, add dirfs attribute to mappers
• #1293, configure port for smb

Fixes

• #1349, don't reorder paths in bulk ops if source and dest are both lists
• #1333, allow mode="x" in get_fs_token_paths
• #1324, allow generic to work with complex URLs
• #1316, exclude bytes-cache kwargs in url_to_fs
• #1314, remote utcnow/utcfromtimestamp
• #1311, dirFS's protocol
• #1305, use get_file rather than get in file caching
• #1295, allow bz2 to be optional

Other

• #1340, 1339, 1329 more bulk ops testing
• #1326, 1296 separate out classes in file caching for future enhancements

2023.6.0

Enhancements

• #1259, add maxdepth fo cp/get/put
• #1263, allow dir modification during walk()
• #1264, add boxfs to registry
• #1266, optimise referenceFS lazy lookups, especially for writing parquet
• #1287, 1288 "encoding" for FTP

Fixes

• #1273, (re)allow reading .zstd reference sets
• #1275, resource.error for win32
• #1278, range reads in dbfs
• #1282, create parent directories in get_file
• #1283, off-by-one in reference block writing
• #1286, strip protocol in local rm_file

Other

• #1267, async bulk tests
• #1268, types and mypy
• #1277, 1279, drop outdated forms io.open, IOError

2023.5.0

Enhancements

• #1236, allow writing ReferenceFS references directly to parquet

Fixes

• #1255, copy of glob to single output directory
• #1254, non-recursive copy of directory (no-op)
• #1253, cleanup fix on close of ZIP FS
• #1250, ignore dirs when copying list of files
• #1249, don't error on register without clobber is registering same thing again
• #1245, special case for other_files and relative path

Other

• #1248, add test harness into released wheel package
• #1247, docs and tests around common bulk file operations

2023.4.0

Enhancements

• #1225, comprehensive docs of expected behaviour of cp/get/put and tests
• #1216, test harness for any backend

Fixes

• #1224, small fixes in reference and dask FSs
• #1218, mv is no-op when origin and destination are the same
• #1217, await in AbstractStreamedFile
• #1215, docbuild fixes
• #1214, unneeded maxdepth manipulation in expand_path
• #1213, pyarros and posixpath related test fixes
• #1211, BackgroundBlockCache: keep a block longer if not yet used
• #1210, webHDFS: location parameter

Other

• #1241, add HfFileSystem to registry
• #1237, register_implementation clobber default changes to False
• #1228, "full" and "devel" installation options
• #1227, register_cache and reporting collision
• #1221, docs about implementations and protocols

2023.3.0

Enhancements

• #1201, add directory FS to the registry and constructable from URLs
• #1194, allow JSON for setting dict-like kwargs in the config
• #1181, give arrow FS proper place in the registry
• #1178, add experimental background-thread buffering cache
• #1162, make ZipFS writable

Fixes

• #1202, fix on_error="omit" when using caching's cat
• #1199, 1163, get/put/cp consistency and empty directories
• #1197, 1183 use bytes for setting value on mapper using numpy
• #1191, clean up open files in spec get_file
• #1164, pass on kwargs correctly to http

Other

• #1186, make seekable=True default for pyarrow files
• #1184, 1185, set minimum python version to 3.8

2023.1.0

Enhancements

• experimental DFReferenceFileSystem (#1157, 1138)
• pyarrow seeking (#1154)
• tar thread safety (#1132)
• fsid method (#1122)

Fixes

• ReferenceFS order fix (#1158)
• fix du and maxdepth (#1128, 1151)
• http ranges (#1141)

Other

• coverage on referenceFS (#1133, 1123)
• docs (#1152, 1150
• remove code duplication in unchain (#1143, 1156, 1121)

2022.11.0

Enhancements

• Speed up FSMap._key_to_str (#1101)
• Add modified/created to Memory and Arrow (#1096)
• Clear expired cache method (#1092)
• Allow seekable arrow file (#1091)
• Allow append for arrow (#1089)
• recursive for sftp.get (#1082)
• topdown arg to walk() (#1081)

Fixes

• fix doc warnings (#1106, #1084)
• Fix HDFS _strip_protocol (#1103)
• Allow URLs with protocol for HDFS (#1099)
• yarl in doc deps (#1095)
• missing await in genericFS.cp (#1094)
• explicit IPv4 for test HTTP server (#1088)
• sort when merging ranges for referenceFS (#1087)

Other

• Check that snappy is snappy (#1079)

2022.10.0

Enhancements

• referenceFS consolidates reads in the same remote file (#1063)
• localfs: add link/symlink/islink (#1059)
• asyncfs: make mirroring methods optional (#1054)
• local: info: provide st_ino and st_nlink from stat (#1053)
• arrow_hdfs replaces hdfs (#1051)
• Add read/write_text (#1047)
• Add pipe/cat to genericFS (#1038)

Fixes

• SSH write doesn't return number of bytes (#1072)
• wrap flush method for LocalFileOpened (#1070)
• localfs: fix support for pathlib/os.PathLike objects in rm (#1058)
• don't get_file remote FTP directory (#1056)
• fix zip write to remote (#1046)
• fix zip del following failed init (#1040)

Other

• add asynclocalfs to the registry (#1060)
• add DVCFileSystem to the registry (#1049)
• add downstream tests (#1037)
• Don't auto-close OpenFiles (#1035)

2022.8.2

• don't close OpenFile on del (#1035)

2022.8.1

• revert #1024 (#1029), with strciter requirements on OpenFile usage

2022.8.0

Enhancements

• writable ZipFileSystem (#1017)
• make OpenFile behave like files and remove dynamic closer in .open() (#1024)
• use isal gunzip (#1008)

Fixes

• remove strip from _parent (#1022)
• disallow aiohttp prereleases (#1018)
• be sure to close cached file (#1016)
• async rm in reverse order (#1014)
• expose fileno in LocalFileOpener (#1010, #1005)
• remove temp files with simplecache writing (#1006)
• azure paths (#1003)
• copy dircache keys before iter

2022.7.1

Fixes

• Remove fspath from LocalFileOpener (#1005)
• Revert 988 (#1003)

2022.7.0

Enhancements

• added fsspec-xrootd implementation to registry (#1000)
• memory file not to copy bytes (#999)
• Filie details passed to FUSE (#972)

Fixes

• Return info for root path of archives (#996)
• arbitrary kwargs passed through in pipe_file (#993)
• special cases for host in URLs for azure (#988)
• unstrip protocol criterion (#980)
• HTTPFile serialisation (#973)

Other

• Show erroring path in FileNotFounds (#989)
• Reference file info without searching directory tree (#985)
• Truncate for local files (#975)

2022.5.0

Enhancements

• mutable ReferenceFS (#958)

Fixes

• Make archive FSs not cachable (#966)
• glob fixes (#961)
• generic copy with unknown size (#959)
• zstd open (#956)
• empty archive file (#954)
• tar chaining (#950, 947)
• missing exceptions in mapper (#940)

Other

• update registry (#852)
• allow None cache (#942)
• mappers to remember init arguments (#939)
• cache docstrings (#933)

2022.03.0

Enhancements

• tqdm example callback with simple methods (#931, 902)
• Allow empty root in get_mapper (#930)
• implement real info for reference FS (#919)
• list known implementations and compressions (#913)

Fixes

• git branch for testing git backend (#929)
• maintain mem FS's root (#926)
• kargs to FS in parquet module (#921)
• fix on_error in references (#917)
• tar ls consistency (#9114)
• pyarrow: don't decompress twice (#911)
• fix FUSE tests (#905)

2022.02.0

Enhancements

• reference FS performance (#892, 900)
• directory/prefix FS (#745)

Fixes

• FUSE (#905, 891)
• iteration in threads (#893)
• OpenFiles slicing (#887)

Other

• drop py36 (#889, 901)

2022.01.0

Fixes

• blocks cache metadata (#746)
• default SMB port (#853)
• caching fixes (#856, 855)
• explicit close for http files (#866)
• put_file to continue when no bytes (#869, 870)

Other

• temporary files location (#851, 871)
• async abstract methods (#858, 859, 860)
• md5 for FIPS (#872)
• remove deprecated pyarrow/distutils (#880, 881)

2021.11.1

Enhancements

• allow compression for fs.open (#826)
• batch more async operations (#824)
• allow github backend for alternate URL (#815)
• speec up reference filesystem (#811)

Fixes

• fixes for parquet functionality (#821, 817)
• typos and docs (#839, 833, 816)
• local root (#829)

Other

• remove BlockSizeError for http (#830)

2021.11.0

Enhancement

• parquet-specific module and cache type (#813, #806)

Fixes

• empty ranges (#802, 801, 803)
• doc typos (#791, 808)
• entrypoints processing (#784)
• cat in ZIP (#789)

Other

• move to fsspec org
• doc deps (#786, 791)

2021.10.1

Fixes

• Removed inaccurate ZipFileSystem.cat() override so that the base class' version is used (#789)
• fix entrypoint processing (#784)
• case where no blocks of a block-cache have yet been loaded (#801)
• don't fetch empty ranges (#802, 803)

Other

• simplify doc deps (#786, 791)

2021.10.0

Fixes

• only close http connector if present (#779)
• hdfs strip protocol (#778)
• fix filecache with check_files (#772)
• put_file to use _parent (#771)

Other

• add kedro link (#781)

2021.09.0

Enhancement

• http put from file-like (#764)
• implement webhdfs cp/rm_file (#762)
• multiple (and concurrent) cat_ranges (#744)

Fixes

• sphinx warnings (#769)
• lexists for links (#757)
• update versioneer (#750)
• hdfs updates (#749)
• propagate async timeout error (#746)
• fix local file seekable (#743)
• fix http isdir when does not exist (#741)

Other

• ocifs, arrow added (#754, #765)
• promote url_to_fs to top level (#753)

2021.08.1

Enhancements

• HTTP get_file/put_file APIs now support callbacks (#731)
• New HTTP put_file method for transferring data to the remote server (chunked) (#731)
• Customizable HTTP client initializers (through passing get_client argument) (#731, #701)
• Support for various checksum / fingerprint headers in HTTP info() (#731)
• local implementation of rm_file (#736)
• local speed improvements (#711)
• sharing options in SMB (#706)
• streaming cat/get for ftp (#700)

Fixes

• check for remote directory when putting (#737)
• storage_option update handling (#734(
• await HTTP call before checking status (#726)
• ftp connect (#722)
• bytes conversion of times in mapper (#721)
• variable overwrite in WholeFileCache cat (#719)
• http file size again (#718)
• rm and create directories in ftp (#716, #703)
• list of files in async put (#713)
• bytes to dict in cat (#710)

2021.07.0

Enhancements

• callbacks (#697)

2021.06.1

Enhancements

• Introduce fsspec.asyn.fsspec_loop to temporarily switch to the fsspec loop. (#671)
• support list for local rm (#678)

Fixes

• error when local mkdir twice (#679)
• fix local info regression for pathlike (#667)

Other

• link to wandbfs (#664)

2021.06.0

Enhancements

• Better testing and folder handling for Memory (#654)
• Negative indexes for cat_file (#653)
• optimize local file listing (#647)

Fixes

• FileNoteFound in http and range exception subclass (#649, 646)
• async timeouts (#643, 645)
• stringify path for pyarrow legacy (#630)

Other

• The fsspec.asyn.get_loop() will always return a loop of a selector policy (#658)
• add helper to construct Range headers for cat_file (#655)

2021.05.0

Enhancements

• Enable listings cache for HTTP filesystem (#560)
• Fold ZipFileSystem and LibArchiveFileSystem into a generic implementation and add new TarFileSystem (#561)
• Use throttling for the get/put methods of AsyncFileSystem (#629)
• rewrite for archive filesystems (#624)
• HTTP listings caching (#623)

Fixes

• gcsfs tests (#638)
• stringify_path for arrow (#630)

Other

• s3a:// alias

2021.04.0

Major changes

• calendar versioning

Enhancements

• better link and size finding for HTTP (#610, %99)
• link following in Local (#608)
• ReferenceFileSystem dev (#606, #604, #602)

Fixes

• drop metadata dep (#605)

0.9.0

Major Changes:

• avoid nested sync calls by copying code (#581, #586, docs #593)
• release again for py36 (#564, #575)

Enhancements:

• logging in mmap cacher, explicitly close files (#559)
• make LocalFileOpener an IOBase (#589)
• better reference file system (#568, #582, #584, #585)
• first-chunk cache (#580)
• sftp listdir (#571)
• http logging and fetch all (#551, #558)
• doc: entry points (#548)

Fixes:

• get_mapper for caching filesystems (#559)
• fix cross-device file move (#547)
• store paths without trailing "/" for DBFS (#557)
• errors that happen on _initiate_upload when closing the AbstractBufferedFile will now be propagated (#587)
• infer_compressions with upper case suffix ($595)
• file initialiser errors (#587)
• CI fix (#563)
• local file commit cross-device (#547)

Version 0.8.7

Fixes:

• fix error with pyarrow metadata for some pythons (#546)

Version 0.8.6

Features:

• Add dbfs:// support (#504, #514)

Enhancements

• don't import pyarrow (#503)
• update entry points syntax (#515)
• ci precommit hooks (#534)

Fixes:

• random appending of a directory within the filesystems find() method (#507, 537)
• fix git tests (#501)
• fix recursive memfs operations (#502)
• fix recursive/maxdepth for cp (#508)
• fix listings cache timeout (#513)
• big endian bytes tests (#519)
• docs syntax (#535, 524, 520, 542)
• transactions and reads (#533)

Version 0.8.5

Features:

• config system
• libarchive implementation
• add reference file system implementation

Version 0.8.4

Features:

• function can_be_local to see whether URL is compatible with open_local
• concurrent cat with filecaches, if backend supports it
• jupyter FS

Fixes:

• dircache expiry after transaction
• blockcache garbage collection
• close for HDFS
• windows tests
• glob depth with "**"

Version 0.8.3

Features:

• error options for cat
• memory fs created time in detailed ls`

Fixes:

• duplicate directories could appear in MemoryFileSystem
• Added support for hat dollar lbrace rbrace regex character escapes in glob
• Fix blockcache (was doing unnecessary work)
• handle multibyte dtypes in readinto
• Fix missing kwargs in call to _copy in asyn

Other:

• Stop inheriting from pyarrow.filesystem for pyarrow>=2.0
• Raise low-level program friendly OSError.
• Guard against instance reuse in new processes
• Make hash_name a method on CachingFileSystem to make it easier to change.
• Use get_event_loop for py3.6 compatibility

Version 0.8.2

Fixes:

• More careful strip for caching

Version 0.8.1

Features:

• add sign to base class
• Allow calling of coroutines from normal code when running async
• Implement writing for cached many files
• Allow concurrent caching of remote files
• Add gdrive:// protocol

Fixes:

• Fix memfs with exact ls
• HTTPFileSystem requires requests and aiohttp in registry

Other:

• Allow http kwargs to clientSession
• Use extras_require in setup.py for optional dependencies
• Replacing md5 with sha256 for hash (CVE req)
• Test against Python 3.8, drop 3.5 testing
• add az alias for abfs

Version 0.8.0

Major release allowing async implementations with concurrent batch operations.

Features:

• async filesystem spec, first applied to HTTP
• OpenFiles cContext for multiple files
• Document async, and ensure docstrings
• Make LocalFileOpener iterable
• handle smb:// protocol using smbprotocol package
• allow Path object in open
• simplecache write mode

Fixes:

• test_local: fix username not in home path
• Tighten cacheFS if dir deleted
• Fix race condition of lzma import when using threads
• properly rewind MemoryFile
• OpenFile newline in reduce

Other:

• Add aiobotocore to deps for s3fs check
• Set default clobber=True on impl register
• Use _get_kwargs_from_url when unchaining
• Add cache_type and cache_options to HTTPFileSystem constructor

Version 0.7.5

• async implemented for HTTP as prototype (read-only)
• write for simplecache
• added SMB (Samba, protocol >=2) implementation

Version 0.7.4

• panel-based GUI

0.7.3 series

• added git and github interfaces
• added chained syntax for open, open_files and get_mapper
• adapt webHDFS for HttpFS
• added open_local
• added simplecache, and compression to both file caches

Version 0.6.2

• Added adl and abfs protocols to the known implementations registry (:pr:`209`)
• Fixed issue with whole-file caching and implementations providing multiple protocols (:pr:`219`)

Version 0.6.1

• LocalFileSystem is now considered a filestore by pyarrow (:pr:`211`)
• Fixed bug in HDFS filesystem with cache_options (:pr:`202`)
• Fixed instance caching bug with multiple instances (:pr:`203`)

Version 0.6.0

• Fixed issues with filesystem instance caching. This was causing authorization errors in downstream libraries like gcsfs and s3fs in multi-threaded code (:pr:`155`, :pr:`181`)
• Changed the default file caching strategy to :class:`fsspec.caching.ReadAheadCache` (:pr:`193`)
• Moved file caches to the new fsspec.caching module. They're still available from their old location in fsspec.core, but we recommend using the new location for new code (:pr:`195`)
• Added a new file caching strategy, :class:`fsspec.caching.BlockCache` for fetching and caching file reads in blocks (:pr:`191`).
• Fixed equality checks for file system instance to return False when compared to objects other than file systems (:pr:`192`)
• Fixed a bug in fsspec.FSMap.keys returning a generator, which was consumed upon iteration (:pr:`189`).
• Removed the magic addition of aliases in AbstractFileSystem.__init__. Now alias methods are always present (:pr:`177`)
• Deprecated passing trim to :class:`fsspec.spec.AbstractBufferedFile`. Pass it in storage_options instead (:pr:`188`)
• Improved handling of requests for :class:`fsspec.implementations.http.HTTPFileSystem` when the HTTP server responds with an (incorrect) content-length of 0 (:pr:`163`)
• Added a detail=True parameter to :meth:`fsspec.spec.AbstractFileSystem.ls` (:pr:`168`)
• Fixed handling of UNC/DFS paths (:issue:`154`)