[release] Prepare for next development iteration

Change-Id: I96ad76f4807e367e7c44f159da9e76b9983f8711
test files are not part of API documentation

Change-Id: I0ef35a825d859001c6ac85a791df9732aff39200
Execute request can create sessions

Conflicts:
	lib/Content.js

Change-Id: I53f42a1465e819d60e43438da8b98c4d77a9a5e7
[release] 4.2.1

Change-Id: I6503494726f302b6bcf9f53a56ddad44ef0cbe21