Refine language grammar and key words

[mirdaki]

Though the language works, some things could probably be improved or changed. We should do the things we know now before we start versioning things (#4). Working list:

• The True and false quotes should either both be the full quotes or just partial ones Use actual quotes and match keywords better #28
• Reading values is finicky Read now stops at press of enter #27
• Variable types can change at any point, consider restricting that or streamlining process Enforce Strong typing on Variable Assignment #23
• Decide if replacing an existing variable is possible Enforce Strong typing on Variable Assignment #23
• Consider making true and false values print the quotes, instead of just true or false Print true and false quotes intead of true and false #29
• Consider swapping and and or Use actual quotes and match keywords better #28
• Consider making not void a void keyword instead Use actual quotes and match keywords better #28
• [ ] Check function returns for edge cases
• General look through of operations and statement combinations to see if some might be better suited together (for instance, matching a Yoda quote with a Yoda quote) Use actual quotes and match keywords better #28