v0.4.0

Bas Nijholt

@basnijholt

23f89e6c · add Jorn Hoofwijk as an author · May 24, 2018

Rename 'choose_points' -> 'ask' and 'add_point', 'add_data' -> 'tell'
and
* several small bug fixes
* add Jorn Hoofwijk as an author