Merge pull request #36 from VeloxAmbitum/master

File cursor functions
Lexer/Compiler support for negative numbers. Fixes #14

Signed-off-by: Christian Gunderman <christian@gundermobile.cwru.edu>
Implemented "depends" statements for including other scripts.

Signed-off-by: Christian Gunderman <christian@gundermobile.cwru.edu>