Merge pull request #60 from holys/develop

refactor test, reduce code
use import `_` to load backend storage
store remove tricky code
refactor ledis lock and binlog
bitmap unlock bugfix
dump use raw key value
refactor binlog

can not compatibility
store add memory support based on goleveldb
lua resp writer
add lua support
lua update
update lua
Merge branch 'lua-feature' into develop
return lua error in eval
replace lua error

error may cause c stack overflow
https://github.com/aarzilli/golua/issues/24
bugfix for script command
make cli output pretty, needs more work
update py client
cli output pretty
info bug fix