v0.3.0

v0.3.0	Protocol Breaking	Persistent Store Breaking	Configuration Change
Core service	Yes	Yes	No
Bitcoin microservice	No	No	Yes
IPFS microservice	No	No	No

Core service

1. Implemented protocol rule of 1 operation per DID per batch.
2. Implemented persistence for operations pending to be batched and anchored.
3. Implemented anchor file schema validation.
4. Implemented caching of blockchain time to improve performance.
5. Merkle root in anchor file is now a multihash.
6. Added logging for every request.
7. Code refactoring - Removed duplicated code among services.
8. Tests - Improved speed of MongoDB tests & removed jasmine-ts dependency.
9. Tests - Removed interfaces from code coverage for a more accurate reporting.
10. Documentation - Removed all references of REST API versioning.
11. Documentation - Updated implementation architecture diagram.
12. Documentation - Removed explicit protocol parameter values.

Bitcoin microservice

1. This service now works directly with the official Bitcoin Core client, removed dependency on BCoin.

IPFS microservice

1. Removed versioning in REST API path.