add_node, rot_obj, add_frame
cubes as nodes for webgl
add_frame() and add_line working like add_node and mv_node
BUGGED: lines added but moving bugged
BUGGED: no wegbl line removal
BUGGED: gl lines removing but still not moving properly
BUGGED: at least links_in and links_shown contain duplicates
add an .id to nodes and links
make test suite for add_to_array()
improve docs for add_to() and add_to_array()
was this a hack? to ensure non-writer nodes have .fisheye
BUGGED: working fairly well, but writers do not move
dispose of webgl obj geometry and material
show_ and hide_ working well, but not all unlinked nodes showing in lariat
attentive to __current_sort_order
make add_to_array return idx
replace get_node_for_linking + get_linked_or_unlinked_node with get_node_by_id
rename remove_shadows to remove_ghosts
add_node_ghosts to centralize that function
cleanup
color labels like the nodes
working nicely for test_40.ttl
BUGGED: hide links not working
improve color_by_type()
isolate more things with if (use_svg)
improve hide_node_links()
make hide_found_links() use links_shown
let show_found_links() expose as-yet-undisplayed eg Group nodes
BUGGED: closing a node sometimes lariats it but leaves some links
hide and show working correctly
squelched the dump of nearest_node