Include latest updates in v0.5.2

Author: adamgreig

cortex-m-rt/CHANGELOG.md

@@ -9,12 +9,21 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ## [v0.5.2] - 2018-08-11
 
+### Added
+
+* A `pre_init!` macro and related functionality to run a function immediately 
+  after reset, before memory initialisation
+
 ### Changed
 
 - The `entry!` and `exception!` macros now also accept a closure instead of a path.
 
 - `DefaultHandler` and `UserHardFault` now default to an infinite loop if left undefined.
 
+### Fixed
+
+* Linked script modified to correctly detect `FLASH` overflow caused by `.data`
+
 ## [v0.5.1] - 2018-05-14
 
 ### Fixed

cortex-m-rt/Cargo.toml

@@ -18,7 +18,7 @@ r0 = "0.2.1"
 [dev-dependencies]
 panic-semihosting = "0.3.0"
 panic-abort = "0.2.0"
-cortex-m = "0.5.3"
+cortex-m = "0.5.4"
 
 [features]
 device = []