Added CONTRIBUTING file.
Updated `FileRead` to accept optional length.
Updated `GetKnownExtensions` to accept an optional extension to match against.
Added skipping of binary files in commandbar preview (#31).
Fixed setting focus to the editor in commandbar with one tab (#31).
Removed double check for invalid UTF-8 output in console.
Renamed `debugger.stackmax*` settings to `debugger.maxdata*`.
Split console output into shorter lines to improve memory usage and handling.
Fixed an auto-complete issue after `repeat until <var>`.