v0.7.0

Updates from v0.6.0.

• Updated
  • Bug fixes for operator override.
    • <<, >> ... Making it parse correctly.
  • Added toString() method to the class Boolean.
  • Some runtime optimaizations for function call.
  • Replaced Bison of a parser generator by Kmyacc.
  • Supported a DateTime class.
  • Supported a CSV/TSV class.
  • Supported some optimizations.
  • Supported System.gc() to perform GC forcely.
  • Supported a Database class for easier to use than a SQLite class.
  • Some bug fixes and improvement.