Fixed bug which caused version handler managed files to get disabled.

* Version Handler was not re-enabling DLLs when only one version of the
  DLL was present in a project.  This would result in DLLs getting disabled
  when importing multiple plugins with version managed DLLs.
  e.g
  - Import plugin 1, version handler runs and enables MYDLL (which was
    disabled in the .unitypackage metadata)
  - Import plugin 2, version handler would not enable MYDLL (which is
    now disabled due to the .unitypackage metadata)
* Added an option to enable / disable versioned file renaming.  Renaming
  is crazy expensive especially on windows where in some cases this causes
  all DLLs to be reloaded in Unity causing 3-4s delay per DLL.
  It's possible someone relies upon the renaming behavior so it's still
  available as an option in the settings menu.
* Improved Version Handler logging.
* Improved layout of the Version Handler settings dialog.
* Added a more useful warning when Version Handler isn't supported by an
  old version of Unity.

BUG=62256311,35587604

Change-Id: Ie454d2a71832b1e3183507548d67e757db970ef3

Author: Stewart Miles

CHANGELOG.md

@@ -1,3 +1,16 @@
+# Version 1.2.24 - Jun 6, 2017
+## New Features
+* Added option to control file renaming in Version Handler settings.
+  Disabling file renaming (default option) significantly increases
+  the speed of file version management operations with the downside
+  that any files that are referenced directly by canonical filename
+  rather than asset ID will no longer be valid.
+* Improved logging in the Version Handler.
+## Bug Fixes
+* Fixed an issue in the Version Handler which caused it to not
+  re-enable plugins when re-importing a custom package with disabled
+  version managed files.
+
 # Version 1.2.23 - May 26, 2017
 ## Bug Fixes
 * Fixed a bug with gradle prebuild resolver on windows.

build.gradle

@@ -137,7 +137,7 @@ project.ext {
     buildPath = file('build').absolutePath
     exportPath = file('build/plugin.unitypackage').absolutePath
     dllDir = 'Assets/PlayServicesResolver/Editor'
-    pluginVersion = '1.2.23.0'
+    pluginVersion = '1.2.24.0'
     currentPluginPath = file('.').absolutePath
     currentPluginBasename = 'play-services-resolver'
     currentPluginName = (currentPluginBasename + '-' + pluginVersion +