[1.4>2.0] [MERGE #2723 @boingoing] Set release/1.4 version to 1.4.2
[1.4>2.0] [MERGE #2723 @boingoing] Set release/1.4 version to 1.4.2

Merge pull request #2723 from boingoing:update_v1.4.2

mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore,mrkmarron/ChakraCore,Microsoft/ChakraCore,mrkmarron/ChakraCore