Changelog for safe-0.3.6

Changelog for Safe 0.3.6 #6, remove unnecessary Ord constraints from maximumBy/minimumBy 0.3.5 Add Safe elemIndexJust/findIndexJust functions Add Safe scan functions Add Safe minimumBy/maximumBy functions Add a module of Exact functions Add Foldable minimum functions Clean up the Foldable module, deprecate the Safe variants 0.3.4 #1, improve the string clipping in readNote 0.3.3 #494, add foldl1' wrappings 0.3.2 Add a Safe.Foldable module 0.3.1 Add findJust, safe wrapping of fromJust/find 0.3 Start of changelog