New Feature:
* Run static analyzers in parallel to improve performance
* Upgrade to Checkstyle 6.16.1
* Upgrade to CodeNarc 0.25.1
* Bug prediction feature for files most likely containing bugs
* Allow to run any external code analyzer over the diff of a pull request
* Improve error message for code cross-reference feature
* If an analyzer failed show this in the pull request statistics
* Trigger analysis when a pull request is reopened
* Create pull request comments when common errors occur during code analysis
* Provide missing icon for interfaces in code cross-reference
Bug fixes:
* Setting limit to 0 does not work for max merge errors
* Ctags encoding issue on some platforms
* Timeouts are too low for some long-running Git operations
* CTags condition checker throws error on PostgreSQL