TODO

Map editor

common UI problems
- cycle selection crashes, fix ><
- press 1 or 2 in stop sign mode, layer toggling shouldnt happen
- textbox overlaps and is impossible to read
traffic signal editor
- button to reset intersection to original cycles
- turns can belong to multiple cycles; the colors become slightly meaningless
- support left turn yield
stop sign editor
- cant have no stop signs for two roads whose center line crosses
  - infer default policy
- draw as red octogon with thin white trim, off to the right side of the road
better visualization
- why are some icons in the intersection?
- draw detailed turns better, like https://i.ytimg.com/vi/NH6R3RH_ZDY/maxresdefault.jpg

try to simplify straw_model step (less phases?)
make cars pathfind to their destination
better visualization
- draw moving / blocked colors (gradually more red as they wait longer)
- draw stop buffer in front/behind of cars
- draw cars in intersections, even when slightly zoomed out
- draw cars in slightly different colors, to distinguish them better
start implementing a second AORTAish driving model
reversible sim

clean up code
- master Map struct
- line type / ditch vec2d / settle on types
add/plan tests
document pieces that're stabilizing
run clippy everywhere
- presubmit script
- also enforce consistent style (import order, extern crate only in mod.rs or lib.rs, derive order)
extract common crates
ask about mut vs returning new version of self (and what that requires of all the contained stuff)
- https://stackoverflow.com/questions/28385339/mutable-self-while-reading-from-owner-object

montlake/520 turn restrictions with pedestrian scramble
close interior neighborhoods to most cars (except for src/dst), see how traffic restricted to arterials would work
create a bike network with minimal hills, dedicated roads, minimal crossings