v0.5.12

KiteModels v0.5.12

Diff since v0.5.11

Changed

• update KiteUtils to v0.6.7
• update Documenter to v1.0

Added

• add type KPS4_3L, which is now only a copy of KPS4, but shall implement a kite with the steering
  lines going to the ground

Merged pull requests:

• Add 3 line kite power system model (#50) (@ufechner7)