add different column name parse strategy

add context for db operation

Add .Elapsed in context.ResponseWriter for monitor purpose

With this commit we can record per requests's elapsed time,
so we can easy to monitor that by use a filter.

#3192 AddTestSnakeString

Fix #3192

Lock

Fix  #3354

Closes #2515 Autodetect timezone in NewOrmWithDB()

dynamically add task #2708

add transport setting

Add custom fs template

add sessionid prefix

orm: support filter raw sql

security question, fix arbitrary file read