[release] 0.0.13

[release] 0.0.12

[release] 0.0.11

[release] Release 0.0.10

- add common error types in errors/errortype
- fix broken logger identity induction in go1.12

[doc] Add changelog for 0.0.9

- update roadmap, move unfinished to 0.0.10

[ver] Release 0.0.8

- just #90 refactor on log

Merge pull request #80 from dyweb/config/v1/deprecated

[config] Deprecated config (v1) package

Merge pull request #80 from dyweb/config/v1/deprecated

[config] Deprecated config (v1) package

Merge pull request #69 from dyweb/doc/add-example

[doc] Improve doc and add example Fix #67

Merge pull request #59 from dyweb/errors/init

[errors] Replace pkg/errors Fix #54 

- multi error and wrap error
- multi error `Append(err error)` returns true if it got a non nil error uber-go/multierr#21
- `Wrap` would reuse stack if the underlying error has one pkg/errors#122, and if `Frames()` is not called, `runtime.Frames` would not be expanded to `[]runtime.Frame`