update version
add beginning of a tutorial
update manual intro
add tutorial pandoc'd to rst and inline into manual
rearrange
Merge branch 'master' into documentation-project
Merge branch 'master' into documentation-project
Merge branch 'master' into documentation-project
partial tutorial as a notebook
Merge branch 'master' into documentation-project
as json test with string data
add crs to geojson output
add read support for geojson crs (needs tests)
add a couple more crs
finish geojson read crs impl