GHS and DAVE conversion tools added

Merge pull request #11 from RubendeBruin/lid

Added triangulation of bow and stern if needed (instead of added a vertex at the center) Added some convenience methods for working on frames (x,y, scaled)

Added more filters

Added:

• merge_close_vertices
• invert_normals
• cut_at_waterplane
• cut_at_xz

retry

0.3.1

Create python-publish.yml