Support for targeting assets based upon .NET version.

This also cleans up the following:
* Makes build target and version labels easier to read.
* Adds support for "any" platform in build targets.
* Centralizes label / filename token parsing.

Bug: 63106731
Change-Id: I1edf9f24ce5343d7e49344c4c2ff9d6678db0668

Author: Stewart Miles

CHANGELOG.md

@@ -1,3 +1,13 @@
+# Version 1.2.32 - Jul 20, 2017
+## New Features
+* Added support for build target selection based upon .NET framework
+  version in the VersionHandler.
+  When appling either gvh\_dotnet-3.5 or gvh\_dotnet-4.5 labels to
+  assets, the VersionHandler will only enable the asset for the
+  specified set of build targets when the matching .NET framework version
+  is selected in Unity 2017's project settings.  This allows assets
+  to be provided in a plugin that need to differ based upon .NET version.
+
 # Version 1.2.31 - Jul 5, 2017
 ## Bug Fixes
 * Force expansion of AARs with native components when using Unity 2017

build.gradle

@@ -137,7 +137,7 @@ project.ext {
     buildPath = file('build').absolutePath
     exportPath = file('build/plugin.unitypackage').absolutePath
     dllDir = 'Assets/PlayServicesResolver/Editor'
-    pluginVersion = '1.2.31.0'
+    pluginVersion = '1.2.32.0'
     currentPluginPath = file('.').absolutePath
     currentPluginBasename = 'play-services-resolver'
     currentPluginName = (currentPluginBasename + '-' + pluginVersion +