Game starts with camera pointing precisely downwards if mouse cursor movement happens during initialization

[Edward Hart-Davis]

When starting the game with cursor movement, I'm finding that the camera's angle points exactly downwards.This seems to be much more reproducible on my Linux machines than on my Windows machine.

[Riot]

clear pending input events at initialisation and reset the view again, should resolve #242

→ <<cset 3e94f441ee0b>>

[Riot]

reject large jumps of the mouse cursor, reset cursor position when entering window, re #242

→ <<cset 723a2b47bd6b>>

[Riot]

disable cursor movement at start and smoothly fade in its sensitivity through the intro, resolves #242

→ <<cset f3d1165b5270>>

[Riot]

Removing milestone: Beta (automated comment)