Add air plane underwater sound and add water splashes

Air attack: Fix some issues with sound channel

Air attack: Replace smoke with bubbles when underwater

Tweak position of big splashes right or left

Spawn bubbles instead of sparkles when air mine is stunned underwater

Make flames collide with bounce world edge again, properly this time

Remove all placement restrictions of air attack and friends

Bounce world edge: Fix buggy gear behaviour if gear spawned inside bounce edge area

TimeBox: Fix buggy behaviour if hog took damage or died before time box arrived

Remove excessive console output of gtAirAttack

King Mode: Fix king placement phase not working correctly with multiple teams in a clan New king placement phase rules: * Before the game begins, each team can walk with their king and teleport for free, everything else is disabled * This special round does not count towards the round counter, like in gfPlaceHog * TotalRounds is set to -1 during this round, like in gfPlaceHog Under the old rules, this was much more hacky. The delay of all delay-less weapons was just set to 1 The problem with the old rules was that if any clan had more than 1 team, eventually the weapon delay will time out before all kings have been placed.

fix fpnum to f64 conversion

optimize 64-bit sqrt some more

Marry C enums, Qt's metaobject system and QML

replace overflowing_sub with wrapping_sub