Merge branch 'release/0.9.20' into develop
Merge branch 'master' into develop
Refactor _env_get as _env_set, which is more appropriate. Also add in decorator function @set_target_env
Clean up code duplicates and let _env_set(target) always return True or None
Fix syntax error in my set_target_env decorator. Apply @set_target_env decorator on info function. Usage fab -R all info or fab -H yoursite.com info
Merge branch 'release/0.9.21'