[Parser] Going to start merging expNode into statement (no strNode inside there anymore)
[Parser] Fixed pointer issue for now, still have to check type
[Parser] About to remove strNode on statement
[Parser] Moved statement checking to expNode
[Parser] expNode only parses needed statements
[Parser] Need to make sure expNode doesn't load too much
[Parser] Fixed block-loading bug for expNode
[Parser] Added variable finding on expNode (still need to change [*] accordingly)
[Parser] Added variable finding
[Parser] Fixed bug with mergeLeftUnary
[Parser] Fixed the nested () parsing issue