[Routing] Updated pyroute - loads data as required, can now do long-distance routes

[Mark Williams]

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OJ W wrote:
> Import should be complete now. Delete any cached data to see the new copy.
> 
> the easiest way to check the data in your area is probably to run
> pyrender and view the slippy map in a web browser
> 

OK, great - that works a lot better. I see it's optimised for shortest
distance - cross London rather than M25. I'll explore it later & see
what's tweakable.

That took a few minutes to get to the far side of Wales, including
download (with the OSM servers down, so as tough as it's getting?) &
succeed on all my previous failed tests, so clearly the old data was the
answer. Additionally it finds my favourite routes ;)

Well done, and thanks!

Mark
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