add gitignore
- setTimeout added
- Added unittest for signin status changing
- fixed, when sender ids are changed, try again to register sender ids.
- add some unitest for sender ids changed
fix json deserialize.
- add another sender id for testing when change sender ids.
version changed v0.8.3 -> v0.8.4
Merge branch 'release/v0.8.4' into develop
Merge branch 'release/v0.8.4'
Merge branch 'develop'
update