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

Use case: oauth2 access limited time tokens which should be updated on regular basis. Supplier allows us to move refresh logic outside client.
Use specified setter to set up supplier after gitlab api object creation.

Adding branches_to_be_notified to SlackService

Webhook support for Release and Deployment events

Change position to be Double instead of Integer

Added Paging- and Stream-Support for Jobs in Pipeline.

Groups: add support for custom attributes

fix: add missing attribute `resolved_at` to `Note` class

add support for PackageFilter in PackagesApi

 Add ability to read resource state events for Issues

Add support for ci_config_path and ci_forward_deployment_enabled properties to Projects API

Support larger file sizes by expanding the size type to a Long.

Add 'runners_token' attribute to group model.

Fix #769

# Conflicts:
#	src/main/java/org/gitlab4j/api/ProjectApi.java
#	src/main/java/org/gitlab4j/api/models/ProjectHook.java

Adding branches_to_be_notified to SlackService and deprecating notify_only_default_branch as per
https://docs.gitlab.com/ee/api/services.html#createedit-slack-service

based on docs https://docs.gitlab.com/ee/api/packages.html and inspired by GroupProjectsFilter