Add GraphViewer class to interact with EditorViewport
GraphViewer now reflects the structure of the ProcessorGraph

Splitters are supported, but Mergers are not. Still a bit buggy,
but it's definitely a start!
Update GraphViewer rendering
Minor updates to GraphViewer code
Update GraphViewer code
Increase width of processor list slightly, so processors with longer names fit better into the list.
Adds save and load of config capabilities to serial input.
Merge pull request #114 from FloFra/serial

Adds saving and loading of configuration capabilities to serial input.
Merge from FloFra repo
Merge branch 'master' of https://github.com/open-ephys/GUI
Merge GraphViewer code from spikesorting branch
Make SerialInput buffer a constant size
Add collapsible editors and fix GraphViewer issue
Merge branch 'master' of https://github.com/open-ephys/GUI
Update ChannelMappingNode from spikesorting version
Fix issues with loading SpikeDetector parameters
Clean up SpikeDetector parameter loading
Prevent channel overflow by setting firstChan to 0
Change version number to 0.2.3
Visual Studio updates