* Upgraded pact-jvm-model to 3.5.13
* Enhanced the conversion of Spring Cloud contracts to Pact contracts using the v3 spec.
Introduces breaking change returning a list of `Pact`s instead of one.
* Enhanced the conversion of Pact contracts using the v3 spec tp Spring Cloud contracts.
* Implemented conversion of Pact v3 messaging to/from Spring Cloud contracts
* Updated code based on comments in the PR
* Added null matcher
* Added missing null matcher conversion from SCC to Pact
* Added number, integer and decimal matchers
* Added support for multiple matchers for the same json path.
Currently only the AND rule logic is supported.
* Added value generator functionality
* Refactored `stubMatchers` and `testMatchers` to support multiple types of "matcher groups", eg. header, path & query
* Refactored e37a8c5d82f96da6e1a698331afc62e6cf747bd6 in favor of a less invasive change using deprecation
* Added header matcher conversion
* Add/updated the ASF license header
* Fixed an issue with the header matchers while updating the documentation
* Updated the documentation
* Made some last minute changes to the `bodyMatchers`: `byNull()` isn't supported by WireMock
Closes#583Fixes#595