ENH: allow fallback when lxml fails to parse

DOC: add release notes for new list convention

ENH: add list of parsers

CLN: remove raise_on_error

BUG: fix format string

BUG: fix different raise type

BLD: travis python 3.2 is strange

BUG: bring in urlparse again since 2to3 shows proper conversion

TST: fix for python26

Author: cpcloud

Diff for: RELEASE.rst

@@ -70,7 +70,6 @@ pandas 0.11.1
   - ``melt`` now accepts the optional parameters ``var_name`` and ``value_name``
     to specify custom column names of the returned DataFrame (GH3649_),
     thanks @hoechenberger
-  - ``read_html`` no longer performs hard date conversion
   - Plotting functions now raise a ``TypeError`` before trying to plot anything
     if the associated objects have have a dtype of ``object`` (GH1818_,
     GH3572_). This happens before any drawing takes place which elimnates any
@@ -133,6 +132,9 @@ pandas 0.11.1
     as an int, maxing with ``int64``, to avoid precision issues (GH3733_)
   - ``na_values`` in a list provided to ``read_csv/read_excel`` will match string and numeric versions
     e.g. ``na_values=['99']`` will match 99 whether the column ends up being int, float, or string (GH3611_)
+  - ``read_html`` now defaults to ``None`` when reading, and falls back on
+    ``bs4`` + ``html5lib`` when lxml fails to parse. a list of parsers to try
+    until success is also valid
 
 **Bug Fixes**
 

Diff for: doc/source/io.rst

@@ -1054,6 +1054,21 @@ Read in pandas ``to_html`` output (with some loss of floating point precision)
    dfin[0].columns
    np.allclose(df, dfin[0])
 
+``lxml`` will raise an error on a failed parse if that is the only parser you
+provide
+
+.. ipython:: python
+
+   dfs = read_html(url, match='Metcalf Bank', index_col=0, flavor=['lxml'])
+
+However, if you have bs4 and html5lib installed and pass ``None`` or ``['lxml',
+'bs4']`` then the parse will most likely succeed. Note that *as soon as a parse
+succeeds, the function will return*.
+
+.. ipython:: python
+
+   dfs = read_html(url, match='Metcalf Bank', index_col=0, flavor=['lxml', 'bs4'])
+
 
 Writing to HTML files
 ~~~~~~~~~~~~~~~~~~~~~~

Diff for: doc/source/v0.11.1.txt

@@ -139,6 +139,10 @@ API changes
 
     - sum, prod, mean, std, var, skew, kurt, corr, and cov
 
+  - ``read_html`` now defaults to ``None`` when reading, and falls back on
+    ``bs4`` + ``html5lib`` when lxml fails to parse. a list of parsers to try
+    until success is also valid
+
 Enhancements
 ~~~~~~~~~~~~