v0.8.2

Modia3D v0.8.2

Diff since v0.8.1

• Fix Cone contact detection
• Add rattleback test (Modia3D/test/Collisions/Rattleback.jl)

Merged pull requests:

• Fix Cone contact detection (#95) (@GerhardHippmann)
• Add rattleback test (#96) (@GerhardHippmann)