[FEATURE] Add saturation control for raster images
[FEATURE] Option to convert a raster to grayscale with choice of desaturation mode (lightness, luminosity, average) (fix #5837)
[FEATURE] Add colorize control for raster layers
Add strength slider for raster colorization
Fix initial state of saturation controls
Merge remote-tracking branch 'origin/master' into hue_saturation
Fix branch to apply to current master
Move BlendMode enum and functions to QgsMapRenderer
[FEATURE] Blend modes for labels and label buffers
Merge remote-tracking branch 'origin/master' into blend_modes
Merge pull request #485 from nyalldawson/blend_modes

Blend modes pt 3 - blend modes for labels
Move busy indicator dialog out of composer and into own gui class
Remove WA_DeleteOnClose attribute from QgsBusyIndicatorDialog

- Add default title
Get fid of newly added feature in mssql provider
Merge pull request #480 from nyalldawson/hue_saturation

Add hue and saturation controls for raster layers