* sqlite work started; obce in (ciselniky remain 2 do)

* číselníky in principle working; raw csv gitignored (easily downloaded from czso.cz)

* vazby vypadají cajk; now views, you old nipponese!

* czso.cz codetables digested

* chráněná území based on AOPK open data / closes #18

* news updated / chráněná území

* function union_sf is being deprecated

* no warning if being tested

* union_sf purged from vignette & readme; deprecation mentioned in news

* date of compilation included in dataset descripton / relates to #18

* ZUJ is not a recognized dimension of obce anymore

* new structures propagated to aws; okresní data removed from ORP (m:n does not work)

* 2020-09 objects generated on ancient PROJ for compatibility reasons

* xenia >> bionic (it's 2020!)

* a desperate workaround of GDAL issues

* still desperate, but somewhat neater, workaround around WKT2 on Travis

* unstable ubuntugis for a more current GDAL on Travis

* only freshest gdal is fresh enough

* out with the silly workaround for ancient gdal on Travis!

* + unit tests for admin areas / known locations

* + unit tests for admin areas / known locations

* cleanup of vignette / more tidyverse, less dollars