improved thermostatic3wayValve implementation: no longer discontinuous jumps in the model
added regularization function for delta_h in thermostatic3WayValve to avoid division by zero
removed deprecated Thermostatic3WayValvePIExample.mo
added Thermostatic3WayValve documentation and organized parameters in tabs
updated revision history
Merge pull request #134 from open-ideas/issue111_3wayValve

new 3WayValve implementation without discontinuities