Bump SourceGithub version and requirements

- SourceGithub 2.1.0
- Source 2.2.0-dev
- MantisBT 2.3.0

Author: dregad

SourceGithub/SourceGithub.php

@@ -11,8 +11,9 @@
 
 class SourceGithubPlugin extends MantisSourceGitBasePlugin {
 
-	const PLUGIN_VERSION = '2.1.0-dev';
-	const FRAMEWORK_VERSION_REQUIRED = '2.0.0';
+	const PLUGIN_VERSION = '2.1.0';
+	const FRAMEWORK_VERSION_REQUIRED = '2.2.0-dev';
+	const MANTIS_VERSION = '2.3.0';
 
 	public $linkPullRequest = '/pull/%s';
 

docs/CONFIGURING.SourceGithub.md

@@ -9,7 +9,7 @@ personal & organization repositories.
 
 ## Requirements
 
-The **SourceGithub** plugin requires Mantis 1.3.0 or later. See the 
+The **SourceGithub** plugin requires MantisBT version 2.3.0 or later. See the 
 [README](../README.md#requirements) for further information.
 
 Ensure both the **Source** and **SourceGithub** plugins are installed.