A bunch of new additions, making the API close to complete. See below.
- Added getenv to read environment variables
- Added mkdir
- Added string_uppercase, string_lowercase and string_trim
- Added list_directory
- Added sign to get the sign of a number
- Added get_system_language to get the written language of the operating system
- Added set_scissor and unset_scissor to set a clipping rectangle (based on your projection, not real screen pixels, for ease of use)