conda forge recipes for submodules

submodule name	submodule maintainer	conda-forge recipe maintainer
esda
giddy
inequality
legendgram
libpysal
mapclassify
mgwr
pointpats
segregation
spaghetti	James Gaboardi	James Gaboardi & Eli Knaap
spglm
spint
splot
spreg
spvcm