Expose busyloop for Project64 API.
      

Added integer scaling option
      Might help with #81

Removed outdated Android build script
      Android should become a build target for cmake instead

Changed screenshot capturing method
      Now it's just reading the entire screen and doing all conversions on the GPU instead of just reading texture and processing it manually.

Added some braces around control structures
      

Fixed tab order
      

(angrylion) emulated the influence of texture coordinate fractions on…
      … yuv2rgb conversion; fixed and optimized mid_texel specific triangular filtering calculations; tiny cleanups.

Added error checking when opening a screenshot file
      

Fixed previous hack for some games that use half of the vertical reso…
      …lution

Updated readme