Merge pull request #49 in VECTO/vecto-sim from ~EMLUZRAPH/vecto-sim:master to master

* commit '57e3ae9d':
  updated readme
  - Fixed issue at low speeds
  - Bugfix: Distance Correction caused crash if no Pwheel input was defined - Release Notes updated - User Manual updated - Generic Vehicles updated
  - Show/log message if Pwheel cycle input is used - Added V2.1 Release Notes - Updated Changelog and User Manual - Updated version to 2.1
  - Limit engine rpm in torque converter operation acc. > acc_min - Shift up (C-to-L, L-to-L) if acc. > acc_min and next-gear-rpm > threshold
  - Updated DEV options for AT update - "DEV" tab is now "Test" tab
  - GUI: Corrected air density unit in GUI - Bugfix: Format error in .vmod header - Update in Pwheel-Input
  - Iterative Pwheel reduction to fit full load
  - Small fixes in Calc and Shift model
  - Added N80h engine speed for 1C>2C shifting (instead of N95h) - Added AT Bus to Generic Vehicles - Shift model updated
  Torque converter test version with rpm limit * DEV Tab permanently enabled! * TClimit in DEV tab * Removed unused DEV parameters
  * Bugfix: Error in TC Iteration caused crash * Bugfix: Minimizing Graph window caused crash
  * Fixed error in cycle conversion * Errors if full load curve is too "short" * Transmission loss extrapolation Errors are now Warnings in Engineering Mode.
  Bugfixes
  updated changelog
  - Pwheel input in driving cycle. Overwrites Pwheel calculation.