Add Go support to CPD
Fix indent tab
Update changelog
Move C# into own sub-module
Rework CPD's LanguageFactory to use ServiceLoader, too
Cleanup dependencies
Cleanup dependencies
Refactor CPDGui to detect available languages dynamically
Update documentation
Update release docu, rename releases ruleset 514->520
Implement clean for generated xdocs
Merge branch 'cpd-language-go' of https://github.com/oinume/pmd into oinume-cpd-language-go
Move Go Language into own sub-module, update changelog