Release 2.4.3

[Argmaster]

Release 2.4.3

• Fixed background_color parameter being completely ignored in raster renders. Thanks
  to @totalretribution reporting the issue.
• Changed default color map used by Project render_raster()to
  DEFAULT_ALPHA_COLOR_MAP as DEFAULT_COLOR_MAP resulted in images with layers
  obfuscating each other in counter intuitive way.
• Unified gray shades of non-alpha and alpha variant of SOLDER_MASK preset color scheme.

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This discussion was created from the release Release 2.4.3.