* feat(core): Switch to Promises everywhere. Adopt Node v4 ES6
Big changes:
* Uses template strings where appropriate
* Config and argument parsing is unified and there is no such thing
as formatterOptions anymore. All user-passed options go through
mergeConfig.
* The node API surface changed (again): `buildSync` is removed,
building operations return Promises.
* Now using Flow for internal type annotations.
More changes:
* Remove buildSync command
* feat(inference): Partially implement object shorthand support
* Refs #649
* Use Flow annotations to enforce types
* Keep flow but switch to comment syntax
* Clarify types
* More flow improvements
* Turn server into class
* LinkerStack becomes class too
* Fix comment description type
* Run flow on lint
* Many more flow fixes
* More intense flow refactoring
* Simplify inference steps
* Update inference tests, flow errors down to 1
* Continue refining types
* Fix more flow issues
* Use 'use strict' everywhere
* Make 'ast' property configurable
* Fix many tests
* Fix more tests
* Fix more tests
* Fix augments
* Test Markdown meta support
* Improve test coverage
* Switch back from for of to for for speed
Also:
* Fixes many issues in the default theme
* Moves the default theme from default-theme to default_theme
* Creates a new, robust linker infrastructure that will support
bare links
* Replaces slugg with github-slugger
* Outputs unknown types as Any. Fixes#451
* Source-sorting by default
Many changes
* Uses a new version of module-deps that exposes a sort key
we use to sort documentation.
* Adds inference for methods in objects
* Groups events into a separate comment property
* Add jsdoc property. Refs https://github.com/documentationjs/documentation/pull/388#issuecomment-215791547
* Namespaces and paths
* More powerful paths: paths now include name, kind, and scope
* comments now include a 'namespace' property with a formatted namespace
* Fix tests
* Re-ignore fonts
* Nix sourceKey from output
* Pin dependency versions
* Fix module-deps-sortable ref
* Update tests for right deps
