v0.4

• incorporates newer version of degauss/r_geo image which had been failing due to error on installation of automagic

v0.3

• overhauled documentation
• publication in JOSS
• updated to latest gdal and rgdal software for future sustainability
• implemented automated testing and building on Travis to test that containers will run and produce expected output files

v0.2

• added memoisation support
• use separate images for each geomarker, not tags
• fix bug where a missing county would cause a failure

v0.1

first public release