[ENH] Pythagorean tree and Pythagorean forest widgets#1441

Merged

astaric merged 12 commits intobiolab:masterfrom

pavlin-policar:pythagorean-tree

Jul 19, 2016

Commits on Jul 11, 2016

Pythagorean tree: Integrate pythagorean tree and forest widget into orange
pavlin-policar
committed

Commits on Jul 13, 2016

Pythagorean tree: Add repr to tree rules and fix docstring example ordering
pavlin-policar
committed

Commits on Jul 15, 2016

Misc: Add tests for cache
pavlin-policar
committed
Pythagorean tree: Move util classes to util folder and remove widgetutils
pavlin-policar
committed
Pythagorean tree: Added repr for rules and added prints to docstring
pavlin-policar
committed

Commits on Jul 18, 2016

Pythagorean tree: Add cosmetic fix
pavlin-policar
committed

Commits on Jul 19, 2016

Pythagorean tree: Change text in target class with regression, make forest name camel case
pavlin-policar
committed