* Added the Modeler class.
* Optimized imports
* Simplifying ReadonlyRepository and Modeler for a better API and adding unit tests.
* Adding unit tests for modeling and some refactoring
* Added some unit tests.
* Folder reorg, added some tests
* Added SaveRequestMethod for specifying POST/PUT/PATCH HTTP methods.
* Added Travis build file
* Removing unused files
* Fixed tests
* Bumped version to 1.3.0, docs.
* Bug fix - sub-modeling of value objects failed.
* Some bug fixes and unit tests
* Added more unit tests, fixed some bugs.
* Added modeler docs
* Removed codecov badge (for now). Added npm package version badge to readme.
* Removed codecov badge (for now). Added npm package version badge to readme.