Changelog for Resource Registry Service

[v4.1.0-SNAPSHOT]

Relation source-target instace types are validated against Relation schema [#7355]
The instances are validated with the defined schema [#18216]
Added Types Cache [#18496]
Superclasses in instances are ordered and does not include internal basic types [#20517]
Redesigned Sharing REST collection [#20530][#20555]
Added the possibility to have a dry run Add/Remove to/from Context [#20530]
Add/Remove to/from Context return the list of affected instances and not just success or failure code [#20555]
Generalised the definition of the type of a property [#20516]
Added type update but the API is not exposed via REST [#20316]
Prepared Query has been fixed to properly consider polymorphic parameter and provided constraint [#20298]
Add tests to check the proper behaviour of operation involving Propagation Constraints [#20923]

Used ContextCache to make the server more efficient
Added REST APIs to get instance contexts both in Access and Sharing Port Type [#20013]
Added support to add contexts in instances header for instances safe methods only [#20012]
Switched JSON management to gcube-jackson [#19116]

Refactored code to support IS Model reorganization (e.g naming, packages)
Migrated Code from OrientDB® 2.2.X APIs OrientDB® 3.0.X APIs [#13180]
Using gxREST defined Methods in place of the ones defined in resource-registry APIs [#11455]
Added support for Encrypted property [#12812]
Refactored code to support renaming of Embedded class to Property [#13274]
Refactored code to avoid to use Jettison library

Exposed API to read Context definition in Context port type [#10241]
Exposed API to read Context definition in Access port type [#10245]
Exposed API to get the Type Schema in Access port type [#10244]
Added modifiedBy property in Header [#9999]
Added reload directive to solve the bug which return the old version after update [#10390]
Refactored Context API to use HTTP body containing Serialized version of Context instead of URL get parameters [#10216]
Removed OrientDB® internal properties from Context serialization [#10219]
Fixed HTTP return content type in case of DELETE Context which caused an error on client even the action success [#10224]
Added feature to reopen the connection over OrientDB® server if closed [#10221]
Added API to enumerate all Context in Access port type [#10610]
Exposed API to enumerate all Context in Context port-type [#10217]
Added support for hierarchical roles in Contexts to support child Context overview [#10435]
Using new multiple inheritance support of ISModel to create types when creating new database [#5706]

Improved logging for REST methods
REST methods override default ServiceUsageRecord 'calledMethod' field to improve accounting performances [#9020]
Removed List and Set support as workaround for OrientDB® bug [#9021]

Removed unneeded dependencies declaration (Thinkerpop™ Frames)
Added Context UUID cache
Added Source Resource in relation including only header. This reflect the behaviour used on Jackson marshalling.
Implemented possibility to create a relation and target entity with one call.
Defined custom pattern (defined in is-model) for DateTimeFormat to support timezone. The value is also changed on DB configuration when the database is created.
Creating an admin with specific username (get from configuration file) instead of the default one 'admin'
Deprecated properties are not get configuration file anymore
Defined Connection Strategy to server as global constant of the registry
Refactored some code for ER creation/update
Extended Exception management to throw ERAvailableInAnotherContext which is useful for clients