clicking nodes now only adds subjects to the current command
add clear_history button
got picking working in update_predicate_visibility, but unpicking still WIP
add init_from_graph_controls(); make @choose_everything() the temporary default and adjust graph_controls in huvis.html
improve update_predicate_visibility() might be golden
ensure initializations for update_predicate_visibility()
factor init_editor() out of gclui.constructor() and reset_editor()
fix mouseout bug
tone down hue of unshown in colorpicker
fix curve direction curvedLine direction bug
make runnable after curve direction fix
misc comments
toggle color node emphasized/showing when they are selected/deselected
dragging node from shelf graphs it and picks it
improvements to reveal and suppress; addition of pinning; support dragging from shelf to discard-bin
increase max 'link distance'
start page with boot_sequence()
onchange display slider value in the title
add support for basic scripts in url, ie no complex verbs or objects
solve the at-first-behaves-like-mousedown problem