feature: unsubscribe can be called after read_reply timeout
bugfix for the stupid mistake in last commit
bugfix for stupid mistake again
bugfix
bugfix: auto merge bug
bugfix: merge conflict failed
feature: add new function get_commands will return all the commands
Merge branch 'commands' of https://github.com/doujiang24/lua-resty-redis into commands

Conflicts:
	lib/resty/redis.lua