work on marker size
add dynamic marker size
change icon size
set up point to segment
add distance to segment function
slow version of point to path distance
filter route data with quadtree
working quadtree + distance. hide rectangle
Merge branch 'paul_merge' of https://github.com/vis-project-4/vis-project-3.github.io into paul_merge
add map layer controls
tweak point-to-path filtering parameters