Add data statement parsing to Parser class
Add methods to parse RRR and RX instructions
Proper parsing of RRR and RX instructions implemented
Add parsing of data statements
Add support for parsing labels in same line as an instruction
Forgot to update RXInstruction's toString
Add support for parameterless jump instruction
Corrected jump instruction syntax
Add Parser Javadoc
Parser adds instructions to memory
Merge branch 'parser'
Enables parsing Sigma16 instructions in a text file to objects, adding them to memory.