OK: OK20 issues

[Duke87]

- the concurrency with US169 is broken due to a coord mismatch at 136thSt
- 19thSt_S and 19thSt_N need to be combined into a single point, the road has been realigned slightly such that there is now only one intersection here

[yakra]

- the concurrency with US169 is broken due to a coord mismatch at 136thSt

Fixed.

- 19thSt_S and 19thSt_N need to be combined into a single point, the road has been realigned slightly such that there is now only one intersection here

Treating this as a newsworthy change, with points at 21stSt & 17thSt.

Elsewhere, +X02002 was placed on an old alignment that dates back to 1981. Not treating this as newsworthy; moved to modern alignment. An amusing example of how inaccurate/outdated Google's cartography was that we used in the early days. What was their source, maybe TIGER?

https://github.com/TravelMapping/HighwayData/pull/5178