* add test case  and notes

* vendor update

* use `tput setaf/srg0` set color in Makefile

* fix loadExternalResource fail cause panic

  change encoding/json -> github.com/CorgiMan/json2

* fix #178  JSON datatype only support utf8mb4 now

* splitstatement support optimizer hint

  https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
  https://dev.mysql.com/doc/refman/8.0/en/comments.html

* vendor daily update

* format explain suggestion content

  1. update vendor
  2. `use db` can't be explain, it will print err log at explain.go

* fix #176

  JSON datatype only support utf8mb4 now

* splitstatement support optimizer hint

  https://dev.mysql.com/doc/refman/8.0/en/optimizer-hints.html
  https://dev.mysql.com/doc/refman/8.0/en/comments.html

* vendor daily update

  support FULLTEXT INDEX syntax

  1. remove Index_Comment in ShowIndex function
  2. remove mysql client deps in Makefile

  1. update vendor pingcap/parser
  2. Makefile add docker contain stop wait
  3. -report-type=rewrite when syntax error, print error info not empty

  RES.009 not consider about "and", "or"... Operator in
  BinaryOperationExpr

  column.Tp may be nil when checking

a new config arg 'min-cardinality' for index column selection

  chardet will detect input sql charset