Add an example for generating a Voronoi diagram
More WiP on a Voronoi diagram of postcodes from CodePoint
The circle of points at "infinity" should be centred on the centroid, not zero
Output progress
Add some unused variants on how to decide whether to clip with the UK boundary or not
Do all postcode areas
Small refactoring
Match 0 or more spaces in the middle of the postcode
Fix an exception message
Fix a syntax error
Add the points to a Python list, not a numpy array
Make centroid coordinates floats (no real reason for this)
Only recreate polygons when necessary

Several other changes mixed in...
Slight change for postcode area type
Add the postcode shape import script
Add a script to import postcode unit KML files
Add a script to create postcode districts and sectors