Version 21.3 available

[Christian]

- Added load additional Bars button
- Line Style option for Free Pen
- Line Style option for Poly Pen
- Version Check broken
- Autosave workspace skips if no Chart-Frame window is open

[Christian]

- Added editable data request timespans
- Fixed an issue where VW does not shutdown properly, if a trading pan is active.
- Fixed problem with insufficient resources in conjunction with draw objects
- Bugfix: Color and Style properties of a wave have no effect