Added Javadoc and log warning when fetching all groups, projects, or users from https://gitlab.com (#396).

* Add support for masked variables #387 #388

* Added getAllMembers() methods (#348).
* Added tests for getAllMembers() methods (#348).

* Added test for lazy Stream evaluation (#295).
* Cleaned up Stream support documentaion (#295).

Added getOptionalProject() with statistics option and Stream methods for all gets that return multiple items (#283).

* Add support for resolve_outdated_diff_discussions in Project
* Add support for initialize_with_readme in Project

1) Added a method to get languages used in a project.
2) Added LicensesApi & MarkdownApi classes and methods

Added getProject() methods which return a single project with statistics and methods for retrieving project archives with a specified format. (#200)

* Load forks of a project with Pager
* Load comments of a commit with Pager
* Load merge request changes
* Load merge request participants.
* Method to request repository contributors
* getMergeRequestChanges method needs list of diffs
* Fixed getFile method does not handle spaces in path correctly