New build - version 0065

Just a few bug fixes and gameplay tweaks in this one: - Missiles now kill shielded enemies - Boss doors attach a little later in 1st area (otherwise tedious for newcomers when stumbling in with vanilla weapons) - Soft-lock fixes - spikey room and room respawner + switch combo (thanks Komeron) - Added in-game tip, that if you get stuck inside switch blocks they'll automatically unswitch - Fixed rare bug where gatling can appear multiple times - Added enemy auto-kill if they somehow get outside room bounds and prevent room clearing (shouldn't be possible but better safe than sorry)