v0.1.0

First tagged version of sqlc:

• completed basic lexer, parser with ocamllex & ocamlyacc
• defined types for SQL AST & SQL data types
• implemented simple SQL engine 'eval.ml' for AST's semantic process
• implemented an simple REPL for SQL statements

Full Changelog: https://github.com/xeonds/sqlc/commits/v0.1.0