ID3 modular interface setup+ID3 API example added
Fix broken imports that slipped through the tests.
minor doc changes
Merge pull request #2021 from mazumdarparijat/pca

Added ID3ClassifierTree modular API
Merge pull request #2042 from tklein23/fixing_broken_imports

Fix broken imports that slipped through the tests.
Adding DotFeatures to multitask classes - we missed to include it if HAVE_EIGEN3 is not defined.
Merge pull request #2045 from tklein23/fixing_broken_imports

multitask: Include DotFeatures independent of HAVE_EIGEN3