Changelog for QGIS 2.2.0
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* General : Recent expressions saved

* General : Paste WKT from clipboard

* User Interface : Improved properties dialogs

* User Interface : Expression dialog improvements

* User Interface : New keybindings

* Symbology : Gradient fill support

* Symbology : Label support for palleted rasters

* Symbology : Colour ramps can be inverted

* Symbology : Copy and Paste in Rule based renderer

* Symbology : On the fly feature generalisation

* Symbology : Anchor points can be set for marker layers

* Symbology : Thematic maps based on expressions

* Symbology : Expression support in symbol diagrams for size and attributes

* Symbology : Else rule in rule based renderer

* Symbology : Inner stroke support for polygons

* Print Layouts : Zebra map border improvements

* Print Layouts : Element rotation support

* Print Layouts : Composer scale added and ruler improvements

* Print Layouts : World file generation

* Print Layouts : Working with multiple items

* Print Layouts : Atlas enhancements

* Print Layouts : Improved item selection

* Print Layouts : Better navigation of compositions

* Print Layouts : Improved styling of pages and shapes

* Digitising : Fill ring digitizing tool

* Application and Project Options : Support for measurement in Nautical Miles

* Data Providers : One to many relations support

* Data Providers : DXF Export tool

* Data Providers : Paste as new vector layer

* Data Providers : WMS legend graphic in table of contents and composer

* QGIS Server : WCS Support added to QGIS Server