4.3.0: Hashtag comments

• Fixed global constants in ternaries being ambiguous with goto labels
  (@thekid)
• Fixed emitting switch statements and case labels' ambiguity w/ goto
  (@thekid)
• Fixed an operator precedence problem causing incorrect nesting in the
  parsed AST for unary prefix operators.
  (@thekid)
• Merged PR #77: Add support for #-style comments including support for
  XP style annotations
  (@thekid)