Release 0.0.6

Motivation

This MR should address #66 (closed), #67 (closed)

Record

2D mapping

See merge request !61 (merged)

(cherry picked from commit 9a3dc565)

d503e173 add surfacefunctions.py 05d46815 extended for evaluation method dadf3f63 ceaef9e2 fixed evaluation 97c4faf9 b15aea3a d11d22f7 fixed one funtion f244b1f9 e724703e 801de05a rewritten to proper test format 423390f4 extended test 272b5c0d 50f8d4b5 027852b2 add example of 2D spline to notebook 5ebd8db5 6cfabb4b fixed traps and sims methods