add class name completion to 'doc' command
GROOVY-6152: LazyList does not allow range access
Merge pull request #196 from masatonagai/feature/doc_cmd_completion

GROOVY-6178: Add class name completion to 'doc' command
Merge pull request #198 from andresteingress/GROOVY-6152

GROOVY-6152: LazyList does not allow range access
GROOVY-6183: Compile time errors and crashes with attribute expression on "this" in static context
GROOVY-6162: Fix type checking error with usage of "this" in static context