Merge pull request #6 from egisatoshi/develop

Refactor
Insert spec of functions at leo_pod_manager
Fix wrong spec of functions at leo_pod
Optimize codes
Change rule
Support dialyzer
Optimize code
Add callgraph option and modify dialyzer-related options
Change rule
Refactor at leo_pod_sup
Modify dialyzer-related settings
Change the rule
Bump leo_pod to 0.6.1
Merge branch 'release/0.6.1' into develop
Support OTP 17.0
Bump leo_pod to 0.6.2
Merge branch 'release/0.6.2' into develop