v0.9.0

Modia3D v0.9.0

Diff since v0.8.2

Non-backwards compatible changes

• Operator buildModia3D(..) is removed. Instead, the new constructor Model3D(..) must be used at the top level of a
  Modia3D definition. It is now possible to define several, independent multibody systems
  (currently, only one of them can have animation and animation export).
• If init/start vectors are defined (e.g. initial state of a FreeMotion joint), they must be defined as SVector{3,Float64}(..).
  Otherwise, errors occur during compilation.

Other changes

• All test models changed, due to the non-backwards compatible change.
• Code generation changed significantly, in order that the interface to Modia3D functions is type stable.
  As a result, simulation is more efficient and much less memory is allocated during simulation.
• Efficiency improvements for collisions (less memory is allocated during simulation + faster simulation).

Closed issues:

• Tutorials throw error (#28)

Merged pull requests:

• Otter next main 2022 02 06 (#97) (@MartinOtter)
• An alloc mpr (#98) (@AndreaNeumayr)