Merge pull request #25 from KIC/feature/next

prepare to enable sample weights

Merge pull request #23 from KIC/fix/lazy_data_frame

fix column access

Merge pull request #20 from KIC/feature/fixes

Feature/fixes

Merge pull request #19 from KIC/feature/keras-sessions

Feature/keras sessions

Merge pull request #18 from KIC/feature/kwargs-fit_args

Feature/kwargs fit args

Merge pull request #17 from KIC/feature/boosting

Feature/boosting

Merge pull request #16 from KIC/feature/features-multi-index

Feature/features multi index

fix readme images

Merge pull request #14 from KIC/feature/refactor-fit

Feature/refactor fit

add mako dependency