More changelog cleanup: dates and bug/feature/chore groupings
More changelog cleanup: dates and bug/feature/chore groupings

Following more conventional guidelines for change logs.

andymeneely/squib,ekstroem/squib,pickfifteen/squib,libbymiller/squib,pickfifteen/squib,andymeneely/squib,libbymiller/squib,ekstroem/squib,pickfifteen/squib,ekstroem/squib