FINALLY, marks and references work smoothly without hacks. if and while work properly.

Added while loop support. However, script marks keep getting wrong position numbers..

Committed the other changes done during a failed attempt of else

Fixed mark positioning - multiple if statements should work properly now

Added if() support

Added mark/reference system to be able to refer to positions in the buffered bytecode. Labels and go-to support.

Parser can now read expressions 100% properly and can perform variable assignment. I'd call this a milestone!

Negative literal integers work properly now..

Expression parser mostly up and running!! Still work to do on it though.

Added a preprocessor with proper #include support. Macro support via #define is planned too. God, was it a B-I-T-C-H to get working right, though..

- The output cmd-line argument is now optional - one is generated from the input file if not given.

Lifted the ';'-after-events rule, though it can still be present. C++ allows it for functions, so this feels like the best solution regarding consistency.. I'm not even sure am I going overboard with this kind of stuff

Negative numbers are now considered numbers too...

Moved CharByte inside DataBuffer since that's where it belongs anyway.

Added comment support

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