* Add an extension to Tracer interface for custom go context creation (#220) -- Krzesimir Nowak
* Fix typo in comments (#222) -- meteorlxy
* Improve documentation for log.Object() to emphasize the requirement to pass immutable arguments (#219) -- 疯狂的小企鹅
* [mock] Return ErrInvalidSpanContext if span context is not MockSpanContext (#216) -- Milad Irannejad
1.1.0 (2019-03-23)
-------------------
Notable changes:
- The library is now released under Apache 2.0 license
- Use Set() instead of Add() in HTTPHeadersCarrier is functionally a breaking change (fixes issue [#159](https://github.com/opentracing/opentracing-go/issues/159))
- 'golang.org/x/net/context' is replaced with 'context' from the standard library