Prepare v0.6.3 (#314)

* Update version number
* Update change log

CHANGES.md

@@ -1,5 +1,11 @@
 # jHDF Change Log
 
+## v0.6.3
+- Improve support for NIO Path. Allows jHDF to open files on non-default file systems such as zip files or remote storage systems. Thanks, @tbrunsch for this contribution https://github.com/jamesmudd/jhdf/pull/304
+- Fix accessing a missing fill value could cause and exception https://github.com/jamesmudd/jhdf/pull/307
+- Dependency updates
+- CI and release process improvements
+
 ## v0.6.2
 - *Breaking API change* Dataset#getMaxSize now returns `long[]` allowing files with max sizes larger than `int` max to be opened. https://github.com/jamesmudd/jhdf/pull/283
 - Add support for opaque datatype https://github.com/jamesmudd/jhdf/pull/264

jhdf/build.gradle

@@ -26,7 +26,7 @@ plugins {
 
 // Variables
 group = 'io.jhdf'
-version = '0.6.3-DRAFT'
+version = '0.6.3'
 
 compileJava {
     sourceCompatibility = "1.8"