StyleCop
don't spit errors if directories to be cleaned are missing

closes #5126
added a new hotkey to trigger pixel doubling

closes #5122
Added a ^BaseBuilding default that Inherits ^Building to CnC mod.
Moved some traits, including MustBeDestroyed, from ^Building to ^BaseBuilding.

Removed some now superflous traits and trait negations from ^CivBuilding.

Changed Inheritances of all buildable structures to ^BaseBuilding.
moved CHANGELOG into GitHub wiki
fixed packaging regressions from upgrade to SDL 2.0.3

followup of #5073
fixed a packaging regression during the GeoIP2 update

followup of #4666
add crane animation to Dune 2000 and Tiberian Sun

closes #3754
Merge pull request #5150 from Mailaender/mv-changelog-wiki

Moved CHANGELOG into GitHub wiki
Merge pull request #5142 from Mailaender/pixeldouble-hotkey

Added a new hotkey to trigger pixel doubling
Merge pull request #5146 from reaperrr/mbd-fix

Removed MustBeDestroyed from CnC Civ/Tech buildings
Merge pull request #5124 from Mailaender/crane-overlay

Added crane build animation to construction yards in Dune 2000 and Tiberian Sun
Merge pull request #5128 from Mailaender/force-clean

Don't spit errors if directories to be cleaned are missing
StyleCop
only show welding overlays when factories are producing

closes #3756
added production overlay to Tiberian Sun factories