Generic rocket + rocket position fixes
Time for keys, get the amount of time spent pressing on the key through

input data structure. Variable speed for space ship.
Update libs + remove warnings
Optimize rendering of starfield (css animate should not update)
Another dramatic render intervention on WaveIntro
HUD component update fix
Model is not immutable therefore all perf fix that could apply based on

this are more or less uselesss. Next step : rewrite model update in an
immutable fashion.
Revert some buggy changes concerning the ship component
Non mutation of the Ship complete with copy based on constructor
More immutability refactoring
True immutability lies in the frozen depth...
Move rocket logic to a saner placer
Optim FX rendering based on React.perf tool
Flatten world model and extract player model to a module
Complete hud rendering optimisations
Screen shake 1
Merge branch 'master' into gh-pages
Update