MLCad 3.50 is available

[Steffen]

release notes quote:

MLCad V3.50:
=================================================================================
Bug-Fixes:
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- BFC statement changed between load and save
- Saving ghost statements
- color dialog crash while using custom colors
- Add link for arrow generator in help module
- Corrections for new operating systems Windows 8 ff
- Undo with primitives
- Unknown part display in part list
- Toolbars not displayed when starting

Changes:
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4) Rotation vector is now enabled again, but actual values are not calculated
   back when the dialog is opened.