v0.7.3

ModiaBase v0.7.3

Diff since v0.7.2

• Speed improvements for structural and symbolic algorithms.
• Added support for state events, time events and synchronous operators
  (positive(), Clock(), after(), pre(), previous(), hold(), initial(), terminal())
• Added support for mixed linear equation systems having Real and Boolean unknowns.
• Simplified code for linear equation systems (while-loop instead of for-loop).
• Added TimerOutputs @timeit instrumentation to the solution of linear equation systems.

Merged pull requests:

• Support for positive, Clock and sample. (#3) (@HildingElmqvist)