CSharp target: Generate XML documentation during the build
Merge pull request #112 from ibre5041/master

C++ target fixes/changes/improvements
Make ST3 an optional dependency of the ANTLR 3 runtime (fixes #126)
Updated Maven dependency versions, clean up compiler arguments
Updated Maven configuration for release
[maven-release-plugin] prepare release 3.5.1
[maven-release-plugin] prepare for next development iteration
Merge remote-tracking branch 'upstream/master'