Update changelog before 0.6.3 release

Author: kutsurak

CHANGELOG.md

@@ -6,11 +6,48 @@ Changelog](https://keepachangelog.com/en/1.0.0/), and this project
 adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
-## Added
+## 0.6.3
+### Added
 - Coverage reports from OS X with [codecov](https://codecov.io/gh/MonetDB/MonetDBLite-Python)
-## Changed
-- Reworked the build system to use [cibuildwheel](https://github.com/joerick/cibuildwheel) (fixed #18)
+### Changed
+- Reworked the build system to use
+  [cibuildwheel](https://github.com/joerick/cibuildwheel) (fixed #18).
+  This essentially means that we now provide binary wheels for the
+  following platforms:
+  + GNU/Linux x86_64
+    - Python 2.7
+    - Python 3.5
+    - Python 3.6
+    - Python 3.7
+  + GNU/Linux x86_64
+    - Python 2.7
+    - Python 3.5
+    - Python 3.6
+    - Python 3.7
+  + MacOS X 10.6 Intel
+    - Python 2.7
+    - Python 3.5
+    - Python 3.6
+    - Python 3.7
+  + Windows AMD64
+    - Python 3.5
+    - Python 3.6
+    - Python 3.7
 - Fixed the iterator protocol for cursors (fixed #34)
+- Fixed a bug about inserting nulls using `monetdblite.insert` (fixed
+  #32)
+- `monetdblite.init` can now be called with relative paths (fixed #28)
+- Deprecated support for Python 2.7. Starting from the next feature
+  release (version 0.7.0), we are going to offer binary wheels only
+  for python versions >= 3.5
+- Deprecated support for 32 bit builds. Starting from the next
+  feature release (version 0.7.0) we are goint to offer binary wheels
+  only for 64 bit platforms.
+- Changed test fixtures to use pytest's temporary file generation
+  facilities.
+### Removed
+- Builds for 32 bit Windows. Building MonetDBLite-C for 32 bit
+  Windows, requires a lot of work for too little benefit.
 ## 0.6.2
 ### Added
 - Added Python 3.7 to the build matrix