[SJS-168][BUG]: Fix for transferInfo not being defined in REJECTED case for data transfer state.
[SJS-183][WIP]: Cleanup of _CANCELProtocolHandler

Conflicts:
	publish/skylink.complete.min.js
	publish/skylink.min.js
	publish/skyway.complete.min.js
	publish/skyway.min.js
[SJS-183][BUG]: Fix for cancelBlobRequest rewrite functionality.
[DOC]: Updated documentation errors

Conflicts:
	publish/skylink.complete.js
	publish/skylink.debug.js
	publish/skyway.complete.js
	publish/skyway.debug.js
	source/data-transfer.js
[REF]: Updated version number to 0.5.7

Conflicts:
	publish/skylink.complete.min.js
	publish/skylink.min.js
	publish/skyway.complete.min.js
	publish/skyway.min.js