v0.3

Look in README.md for instructions for using the compiler, and do note that it currently only supports Windows x64. If you use the compiler's interpreted mode -i, it needs no other dependencies and can just be run as an executable. If you use the compiler's executable output mode -o, you will need to use a C compiler and linker for the final step.

Changes:

• Added module system by introducing the import statement and #export directive.