include imagination library for icons
improve BaseNode events, simplify template

fix #32 Select nodes with single click
new setting toggle button
add separate method for getting output values
add color preview in port
update and cleanup color control nodes
refactor colorpickers, new base class, simplified templates
new interface for showing colorpickers on ports or nodes
add console node
include closure compiler in repo
move all picker entries to own file, comment currently broken ones
implement frame count node
implement system time node
add line numbers to console output
fix ignoring preferred param when value is 0
add getters for stage center
implement LFO node
transmit value on when destination is connected
minor refactoring of wire class
implement new wire disconnection callback
implement math operators