Merge pull request #276 in VECTO/vecto-sim from...

Merge pull request #276 in VECTO/vecto-sim from ~EMQUARIMA/vecto-sim:bugfix/VECTO-355-update-documentation to develop

* commit '4490e0dd': (22 commits)
  updating changelog in user manual
  updating version number in release notes
  updating version numbers
  adding plugin mechanism to commandline tool
  updating release notes
  added generic vehicle in engine-only mode
  fixes in user manual
  updating css rules for declaration and engineerig mode settings
  adapt engine tests due to changes in idle controller (reduce engine speed faster)
  update sum-file and mod-file for AT tests due to new/modified columns
  delta CdxA for trailer T1 changed to 0.6 in segmentation table
  empty lookahead data does no longer throw an exceltion -> adapt testcase
  require acceleration curve to be valid (case then .vacc file is not valid is handled in the cach-block
  adaptations for reading/writing auxiliaries (decl & engineering)
  adding auxiliary to generic vehicle
  minor fixes user interface, input validation torque converter
  removing class 2 PTO generic vehicle, renaming PTO generic vehicle
  updating generic vehicles
  updating pictures for user manual
  adding at model for user manual
  ...