This change adds a new descending vertical direction mode for
map grid annotations. Previously only ascending text was
supported for vertical annotations.
Previously, for rotated maps or reprojected grids, the composer would
draw all coordinates for every map side. This resulted in a mix of
latitude/y and longitude/x coordinates showing on a side. This change
allows users to control whether they want all coordinates, latitude
only or longitude only for each map frame side. Similar options have
also been added for controlling how a map grid frame is divided.
In related news... the composer map dialog is now the ugliest,
most cluttered and un-user friendly dialog in all of QGIS. I'd
love suggestions/mockups from the UX team for ways this could
be improved.