Version 0.4

Tried hard to tidy up the code and remove as many bugs as possible. Previous versions have been quite scrappy. Cygwin makefiles added. If anyone builds Linux or Unix ones I would appreciate feedback on how useful these makefiles are.

0.4 - Tidying up - previous releases were a bit scrappy.
* Added image support. Currently only supports TGA, a nice simple format.
Dont really want to add dependencies to image libraries.
* Added makefiles for *nix. This was done with Cygwin under Windows, not
tested under *nix system. Should be able to just "make all" from root.
* Removed any C++ hangover code in Lua so gcc doesnt complain.
* Few minor bug fixes.
* Commented more of the code.
* Credited authors for Lua!
* More example scripts & enhanced existing scripts.
* Title window text tag now "title".
* _DEVELOP helper scripts called from Doris not script.
* Scripts clear screen rather than Window.