* Update release updates and user manual
* Updates error and warning messages
* Include given  heading with calculated coordinate heading
* Include free definition of coordinate unit for *.csms files
* Update Changes.md
* Update DemoData

  * Delete valid_t_tire from output files and job-file
  * Change t_tire from required in input data to optional (like p_tire)
  * Delete rho_air_ref from criteria and GUI
  * Update release notes

  * Update user manual
  * Input "Report bug" button (at the moment this does nothing)

  * Update region and language settings: now it is regardless of the system which settings are used ! But the file definitions are still the same
  * Update of the excel makro in terms of the system region and language settings

* Output folder will be now created automatically if it´s not existing without questioning
* Welcome form added for first application start

  * Add control for beta angle <= 360° and calculation to +-180° if angle > +-180°
  * Update user manual
  * New Version number.

This reverts commit ac3d72cc.

  * Correction length calculation for the first section in the dat-file when there is a gap between the first and second MS.
  * Update length calculation in csms-file to check if specified length from user and coordinates are the same
  * New Version number.

Actualise the User Manual

* Add folders: Declaration/, DemoData/ and Docs/ with user-manual source.
* Minor fixes in User Manual.: 2.01-->2.0.x, "executive"-->"executable".
* Add BUILD.md, README.md, CHANGES.md, COPYING.txt.
* Update Release-procedure in BUILD.md.

* Add CSE-icon to main window.
* Move and User-Manual into /Docs folder and remove version-info from its name.
* Minor rename app with undrscore.
* Use Markdown for README.