Prepare release notes for 1.4.2
Prepare release notes for 1.4.2

aprescott/diffa,0x6e6562/diffa,lshift/diffa,aprescott/diffa,lshift/diffa,lshift/diffa,0x6e6562/diffa,0x6e6562/diffa,0x6e6562/diffa,aprescott/diffa,lshift/diffa,aprescott/diffa,lshift/diffa