Removed the geonet node. 
This fixes #305.
Old geonet nodes are being replaced by network nodes with their output type set to 'geometry'.
Merge branch 'geonet'
Added nodes for string manipluation

glyphs, randomGlyph, asBinaryString, asBinaryList, asNumberList,
glyphAt, contains, endsWith, equal, replace, startsWith, subString, trim
Changed language from "glyphs" to "characters"
mouseposition icon

put in realtime folder
more icons

remaining math and some realtime in wrong folder
It's now possible to render the root network while you're in a subnetwork.
The root network is now rendered by default.
Merge pull request #312 from djaddison/master

Additional string nodes.

Thanks @djaddison!
From now on, we just always render the root network.
Optimize performance of buildArgumentMaps

buildArgumentMaps is a core rendering function. It creates a list of
argument maps for each invocation of the node function. It used to
create a full data structure in memory, causing lots of allocation.
Now, we return an Iterator that builds arguments maps on-the-fly.
Merge branch 'master' into osc