Gephi 0.7alpha4

Continuously improving 0.7 alpha version. Goals are fixing bugs and add small needed features if necessary. Add PDF Export.

New features

* GraphML export
* PDF Export. Special thanks to Jeremy Subtil.
* EgoNetwork Filter - Get neighbours at depth 1, 2, 3 and Max
* CSV export - Export adjacency list and matrix
* New LabelAdjust algorithm, faster and better quality. Thanks to Mathieu Jacomy.
* Watts-Strogatz Small World Generator

Bugfixes

* Shortest Path and Heatmap tools not working for Undirected Graphs (bug 559866)
* Colors not imported in DOT (bug 559846)
* Can't import a CSV (bug 557305)
* Expansion/Contraction layout mispositionning when graph not centered (bug 561327)
* Statistics disabled when opening project not from Overview (bug 561483)
* Exception when drawing Filter's histogram (bug 570975)
* NullPointerException when filtering undirected graphs (bug 571153)
* Wrong current query on Filters Query Panel (bug 571274)
* Exception when changing filter parameter on a Operator (bug 571287)
* Error when importing nodes with empty labels in NET format (567263)
* ConcurrentModificationException when Import Report opens (bug 571871)
* GraphML importer doesn't detects Undirected graphs (bug 571875)
* Auto-scale doesn't recenters the graph (bug 571907)
* The Statistics report is not updated after executing the Metric again (bug 570971) (Thanks Paul-Antoine Bittner)
* "Node must be in the graph" error (bug 538701)
* Menubar is incomplete (bug 531505)
* Import throws Exception when file is invalid instead of Warning user (bug 530970)
* Settle command not working for Yifan Hu layouts (bug 562822)

Usability

* Heatmap tool description snippet corrected

API

* In PreviewAPI, the background color has been put in the PreviewModel. The PreviewController has been updated as well.
* Change FilterController.filter() to FilterController.filterVisible() and FilterController.select() to FilterController.selectVisible(). The controller is managing this process in a separate thread, with progress, and takes care of properties change. A more simple direct way to filter is required for headless access. The FilterController.filter() has been created and return the GraphView builded by the filter process.
* Expose basic visualization features in a newly created Visualization API. No proper visualization API exists but its creation is necessary to avoid implementation module dependencies.

Updated Modules

* ToolsPlugin
* Algorithms
* DesktopTools
* ProcessorPlugin
* ProjectUI
* ProjectAPI
* ImportAPI
* ImportPlugin
* DesktopImport
* DesktopBranding
* DesktopProject (new)
* DesktopFilters
* ExportPlugin
* ExportPluginUI
* LayoutPlugin
* FiltersAPI
* DesktopStatistics
* FiltersPlugin
* FiltersPluginUI
* FiltersImpl (new)
* VisualizationAPI (new)