[ALOY-919] add 1.3.1 release notes
[ALOY-919] add 1.3.1 release notes

4talesa/alloy,brentonhouse/brentonhouse.alloy,FokkeZB/alloy,xavierlacot/alloy,bhatfield/alloy,WY08271/alloy,xavierlacot/alloy,mobilehero/adamantium,bhatfield/alloy,4talesa/alloy,4talesa/alloy,jvkops/alloy,mobilehero/adamantium,xavierlacot/alloy,WY08271/alloy,WY08271/alloy,brentonhouse/brentonhouse.alloy,jvkops/alloy,indera/alloy,indera/alloy,bhatfield/alloy,FokkeZB/alloy,jvkops/alloy,brentonhouse/brentonhouse.alloy,indera/alloy,mobilehero/adamantium,FokkeZB/alloy