Added documentation for textdiagnostics class
Fixed types in core module test
Modified current corpus tests
Added simple test for textdiagnostics class
Updated tokenizer test
Updated morphoanalyzer test
Updated clausesegmenter test. Note that JSON processing fails currently
Updated clausesegmenter test. Note that JSON processing fails currently
Merge branch 'master' of github.com:tpetmanson/estnltk

* 'master' of github.com:tpetmanson/estnltk:
  Tegin algust eestikeelse dokumentatsiooni lisamisega.