This increase the safety of our build; external consumers
do no longer need to account for the `browser` field to
bundle bpmn-js (or otherwise bundle a Node shim, unintentionally).
* only register keyboard bindings that are backed by actual
editor actions
* rename BpmnKeyBindings -> BpmnKeyboardBindings for parity with
diagram-js@latest
* sub-class and override _keyboardBindings_ service provided
by diagram-js
* extend spec to verify default actions
With the new version of `diagram-js`, the keyboard listeners receive
a single parameter which is an object with `KeyboardEvent` event
as the only property. `BpmnKeyBindings` needed to change in order
to make use of new version of API.
* use ES6 import / export
* UTILS: export individual utilities
* TESTS: localize TestHelper includes
BREAKING CHANGE:
* all utilities export independent functions
* library sources got ported to ES6. You must now use
a ES module bundler such as Browserify + babelify or
Webpack to consume this library (or parts of it).