Invert colors if clan color is very dark

Fix turn end if placing air attack in bouncy world edge map was denied Fixes bug #728.

Nemo is right, it's better to set hedgehog pos in uGearsList

Hedgehogs: Move setting of random pos to chAddHH This fixes a problem that in missions, all hedgehogs start with Pos=0

Fix right limit of piano placement in bounce world edge It was slightly beyond the right bounce edge.

Update German translation

Update locale files

add gear renderer module

fix atlas.insert_set

fix atlas.insert for real this time

actually atlas tests were also broken

fix atlas.insert

Backed out changeset f9f71cccb5c3 - Wuzzy is right, the license is incompatible. I'd misread the wording on https://fontlibrary.org/en/font/symbola The terms on the author's site prevent using it with almost all FOSS projects, and even prevent using it in a merge like this. We'll just have to find some other font to improve coverage.

finetune atlas proptest