update 0.9.19 with dev branch

merge

turkish translation updates

- Revert division hack nonsense - Patch Distance instead to not produce zero on non-zero parameters passed

Store colors in human-readable form

lol, how did it manage to work for years? (z1 - z2 * z.Round) shouldn't respect signs of z1 and z2. It turns out we often had arbitrary .Frac value in division result. Also fixes issue #613.

Switch to 'settings.ini'. Copies old ini file if necessary on startup.

why would we ever want to divide by 0?

hwFloat division is ~1.6 times faster now

Trivial optimization. Wonder if compiler was smart enough about it.

add hedgehog tp svg as reference (as requested by nemo). feel free to improve :P

Fix issue #603

Implement issue #308 with '|' as separator

let's go with what nemo suggests

Fix hedgehogs number desync. Now all desyncs except the one from issue #521 should be fixed. Please, test.

Check for admin role right in the sql statemenet

let's try to kill the thread right away and protect the thread variable with a mutex

added two security flags to windows linking

I see no reason why a visual effect needs Distance. IMO square should look just fine. Untested. Oh. Also reduced flake count at Randi's request.

New hwSqrt implementation which is 46/19 times faster than the old one!

CASE FOLDING!!! Never ever commit files with the same name and different casing

Reduce AI skills more on high Level values

fix for issue #599: "Change graphics size settings to use qspinbox"? somebody ask unC0Rr if that's what he wanted :p

implementation of a restart-game button. location and appearance is not final :P

whoops, unbreak build. how come that cmake doesn't stop anymore on engine build error?

This isn't necessary anymore

fix for issue #611: Engine crash in portal code

- Revert server workaround over desync from r98e2dbdda8c0 - Don't allow more than 48 hedgehogs