*: support create table distributed by ($backend) #451

RadonDB v1.0.7

• feature: support union (#324 @zhyass)
• feature: kill idle transaction (#274 @andyli029)
• feature: drop tables in the list (#398 @andyli029)
• feature: support where_condition about in and or (#404 @zhyass)
• fix: auto_increment report out of range value(#244 @BohuTANG)
• fix: DATA RACE about union (#432 @andyli029)
• fix: aggregate(distinct)panic (#394 @andyli029)
• fix: join result out of memory(#425 @zhyass)
• fix: create table error(#438 @andyli029)
• fix: union query denied (#421 @andyli029)
• fix: use db return ERROR when new backend just added (#403 @andyli029)

And bugs' descriptions, see:
https://github.com/radondb/radon/issues?q=is%3Aclosed+milestone%3Av1.0.7+label%3A%22type%3A+bug%22

RadonDB v1.0.6.1

• bug: executor: fix aggregate distinct panic (#394 @andyli029)

RadonDB v1.0.6

• feature: support distributed join (#229 @zhyass)
• feature: show multitxn infomation in show processlist (#235 @andyli029)
• feature: add privilege on database (#309 @andyli029)
• feature: support for FULLTEXT INDEX (#243 @BohuTANG)
• feature: support PREPARE statement (#238 @BohuTANG)
• feature: support CHECKSUM TABLE (#259 @BohuTANG)
• feature: support GLOBAL/SINGLE table type (#377 @zhyass @andyli029 @BohuTNAG)

And many bugs, see:
https://github.com/radondb/radon/issues?q=is%3Aclosed+milestone%3Av1.0.6+label%3A%22type%3A+bug%22

• feature: support for global auto-increment (#237 )
• bug: fixup Unknown database 'db1' when drop table(#236 )

• feature: support for the "ON UPDATE CURRENT_TIMESTAMP" syntax(#233 )

• feature: pushed-down distributed join support (#148 )
• fetaure: show table status support(Navicat) (#157 )
• fetaure: create [unique] index support (#193 )
• bug: fixup order by need validate table name(#215 )
• bug: fixup avg convert error(#213 )
• bug: the result of "show create table ..." had missed partition msg if the table has partition key(#196 )
• bug: partition key may doesn`t consistent with primary key or unique when executing alter table operation(#192 )

• feature: support distributed multiple-statement transaction (#77)

• feature: streaming fetch parallel (#170 )
• feature: select from information_schema.COLUMNS support (#172 )
• feature: change the /v1/user/add user host to % (#182 )
• feature: session variables to enable streaming fetch (#187 )
• feature: supports global table (#101 )
• feature: support: SHOW FULL TABLES (#167 )
• feature: change the blocks from 128 to 64 (#180 )
• feature: add config for stream fetch buffer seize (#176 )
• bug: fixup select count() error (#165 )
• bug: fixup when partition key not same with primary key, radon doesn`t report error (#153 )

[API] Add an API to get users #104
[Transaction] Add redo-log for distributed transaction commit/rollback failed after retries #122