Heads-I-Lose

Not a great implementation, but it works. If no route geometry choice is
made it defaults to the default "route_geometry". If
"alternative_geometries" is specified it uses the first one of the
alternatives (because as far as I can tell there is only ever one
alternative? I supposed at some point I could extend if needed, perhaps
use a tuple argument: {"alternative_geomtries", 1}). Leaf check-in: 9c81571ac3 user: base@atomicules.co.uk tags: origin/master, trunk

Not a great implementation, but it works. If no route geometry choice is
made it defaults to the default "route_geometry". If
"alternative_geometries" is specified it uses the first one of the
alternatives (because as far as I can tell there is only ever one
alternative? I supposed at some point I could extend if needed, perhaps
use a tuple argument: {"alternative_geomtries", 1}). check-in: 6807958aad user: base@atomicules.co.uk tags: refs/stash, trunk

Which means I also need to wrap around the list if I get 16 segments.
I.e. both 0 rads and 2*Pi rads are valid.

This means I probably could have just simply added Pi (previous commit)
to reverse the journey as I can just keep wrapping around. Oh well. check-in: 598ec92c32 user: base@atomicules.co.uk tags: origin/master, trunk

Had not actually tried out my changes, or, it seems, used my brain at all
in making them.

- Can't simply just add Pi on, need to keep it within 2*Pi limit
- Also forgot to get compass direction check-in: 3022ce9541 user: base@atomicules.co.uk tags: origin/master, trunk

I don't want to have to query OSRM for th ereverse route - it's
pointless. Instead reverse the route we already have - because I don't
actually need a properly ordered reverse route, just a list of
directions and distances.

In order to do this made sense to re-jig some of the functions a bit:

- Need date and time at top level, not buried in get_weather since
reverse route or normal route is also dependent on time of day
- Don't convert to distances and compass directions in one swoop since
it is easier to reverse the heading angles rather than compass points check-in: 935d1fbeae user: base@atomicules.co.uk tags: origin/master, trunk

In other words: done for now. Those are pretty much the changes I
wanted to do. Sure they will be much room for improvements to the code,
but it works! check-in: c4d0b2bbec user: base@atomicules.co.uk tags: origin/master, trunk

- Get rid of the mixed up mess of CamelCase, underscores, prefixes,
suffixes, abbreviations, full names, etc.
- Make indenting of lists:map functions consistent
- Remove spurious whitespace check-in: 301914a6a1 user: base@atomicules.co.uk tags: origin/master, trunk