v0.13.6

[CoffeeTableEspresso]

New Features:

• list->search and str->search now takes an additional optional parameter (the starting position).
• str->search now returns the end position of the found str (as well as the start).
• Allow no trailing new line at end of files.
• Add eval function.

Bug Fixes:

• Fix bug with calling str->trim(whitespace).
• Clean up how io handles files with newlines on Windows.
• Fix error messages for all bool methods.

Internal Changes:

• Clean up directory structure
• Clean up tests for errors
• Start preliminary work on GC.