* mostly fixed reversed assertEquals parameters.
simplified some assertions.
opted to use assertThat in places where matchers exist.

* fixed reversed assertEquals parameters.

#778)

* Add checkstyle.xml, idea-style guide (For importing in IDE) and enabling checkstyle in build

* addressing PR concerns

* address PR comments

* add header file

* W3C : Tracecontext classes  (#775)

* W3C Tracecontext

* adding comments

* addressing PR comments

* Implement W3C tracestate

* address review feedbacks

* address review comments

* W3C Integration (#782)

* Initial integration of W3C protocol for incoming request

* refactoring header name

* updating the verbosity level when correlation fails

* Fix bugs in correlation found via tests, implement more unit tests and address partial PR comments

* improve createOutboundTracestate()

* create tracestate when header not available

* fix test

* enable outbout w3c

* Refactering code to use Helper methods with TraceContext classes

*  fix tracestate integration, fix outbound tracestate injection, fix tests, propogate traceflags

* add property to turn on W3C in springboot starter, remove debug logs

* adopt internal storage of id's to legacy AI format for backport, update tests

* address PR comments

* Fix an incorrect assert

* refactor resolveCorrelation() method to be more readable and debuggable

* rename method names, create outbound traceparent for http if there is no incoming request too

* fixing a bug in w3c config for agent

* fix the dependency type name, fix target to be host+port | target

* update changelog and readme

* Minor changes, add log trace to check W3C enabled on agent

* adding support for backport with AI-Legacy-Correlation-Headers

* adding tests for backward compatibility

* address PR comments

* add few tests, comments

* add backport switch turn off test

* reset after tests, to fix the build

* adding tracing to understand when W3C is turned on for debugging

* fix format string

* fix a bug in creating correct target for dependencies

* fix build script

* update changelog