ABP version 0.4.27

API usage:

GET https://abv.peteshadbolt.co.uk/graph -> JSON
POST JSON -> https://abv.peteshadbolt.co.uk/graph

TODO:

GET https://abv.peteshadbolt.co.uk/hadamard/0
GET https://abv.peteshadbolt.co.uk/cz/0/1
GET https://abv.peteshadbolt.co.uk/measure/10/x
etc.