1.0.6 add MIT license.
1.0.7 fix alias for identifier #16 , pr: #17
1.0.8 support union grammar follow: https://dev.mysql.com/doc/refman/8.0/en/union.html
1.0.9 fix stringify having #29 , pr: #28
1.1.0 hotfix: Remove unused import
1.1.1 fix stringify having #29 , pr: #28
1.2.0 fix typo "refrence" to "reference" #24
1.2.1 fix stringify having #29 , pr: #28
1.2.2 feat: add support for "`" quoted alias, pr: #33
1.3.0 fix tableFactor alias bug. AST changed in tableFactor. #34
1.4.0 fix bug `using ' & " for column alias?` #40 #44
1.4.1 hogfix "support quoted alias: multiple alias and orderby support"
1.5.0 support feature placeholder.
