Release 0.5.0

Below is the list of changes in this version:

• New lambda syntax: {x: int} -> {print x}
• Removed ssexpressions, slists, and sqexpressions
• Added ability to use syntax: {}[index] to get item at given index of qexpression
• Static Typing built into the interpreter
• Ability to cast values (including from strings to int and doubles)
• Added void type
• Added ability to use arguments sent to program when ran
  • The args given to program are stored in a qexpression called args
  • To get the first argument, for example, you simple do (get 0 args).
  • argc is also set to the amount of args that were given to the program
• Started sublime text syntax definitions (outdated as of v0.6.0a)
• More examples provided in examples directory
• stdlib.lydg automatically loaded into every program
• Error checking improvements