No more pointers in Parser
Needs more const
Getting rid of pointers.
Added modulus operator and also break and final keywords to parser.
Added modulus to interpreter.
Some fixes. Added dot to parser.
No more case insensitive uppercase keywords
Break and final implemented. Some new ideas in NOTES.
Got rid of End-keyword. Better syntax now. Multiple fixes.
Quick fix for else-ifs. Added subexpression handling.
Merge branch 'expr-rewrite'

Merging multiple fixes from another branch.