Fix NullPointer on invalid settings

Settings having only a single Type caused a NullPointer when
printing the allowed types.

Improves #818

Enable build on GitHub Actions

Migrate from JUnit 4 to JUnit 5

Adding getContributors sort by asc / desc support

Fix #810 : Change all model Ids to Long

Update Deployment API 

Implement keys api

Actually fetch all the memberships with UserAPI.getMemberships() and …

Fixed de-serialization of MembershipSourceType by letting the Jackson…

Fixed de-serialization of MembershipSourceType by letting the JacksonJsonEnumHelper know that the first letter should be capitalized

Actually fetch all the memberships with UserAPI.getMemberships() and also provide a pager based method for lazy fetching

Fix #767 : Adding merge request note award functions and renaming issue functions

configure jersey to use jackson over json binding

Create new projects from project template.

Include Pipeline data in Merge Request model

Added support for scope attribute to EventsApi

Upload: accept an InputStream besides a File

Feature: Replace auth token with supplier

Add top_level_only parameter to GroupFilter

Fix #800 Increase max Artifact size from Integer to Long

Fix gitlab4j#805 Increase CommitStatus id from Integer to Long