Merge pull request #5 from zignd/add-is-err-composition Add IsErrComposition to help check if a custom error type is a composition of Err

Merge pull request #4 from zignd/skip-nil-data-json Skip nil data from serialized JSON

Merge pull request #2 from zignd/fix-errors-serialization Fix errors serialization

Add WithCause 

Add WithStack and rename Error to Err to allow composition 

Refactor the package - Add support for Go modules - Add support for Go >= 1.13 errors - Improve the stack trace serialization - Rename the "context" for "data" to avoid conflicts with Go context.Context - Add a new example

Fix typo in README.md