Create roadmap.md

roadmap.md

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+### Tasks for getting this plugin operational
+
+1. Plugin offers a Hello, World GUI window
+   1. See, as just one example: https://docs.qgis.org/3.16/en/docs/pyqgis_developer_cookbook/communicating.html#communicating-with-the-user 
+1. Test plugin server workflow by releasing v0.01 and a minorly modified v.0.02
+1. Plugin loads a vector layer from QGIS into plugin code using `pyqgis`
+   1. See https://docs.qgis.org/3.16/en/docs/pyqgis_developer_cookbook/vector.html and https://docs.qgis.org/3.16/en/docs/pyqgis_developer_cookbook/vector.html#creating-vector-layers
+1. Modifies the geometry of that layer somehow
+1. Makes basic connections to our library (via a submodule), importing it, tests out functionality (can equally be done before any of the more substantial pyqgis coding above)
+1. Hardcoding all of the above to make the plugin, QGIS vector layer modification, and basic reprojections to work more or less together. Projections do not need to be user-inputted yet.
+1. UI design charrette
+1. UI implementation
+1. Write projstring and WKT parsers (limited implementations of just our subset of WKT projections, not all possible WKT projections, of course! likewise, just handle our projstrings.)
+   1. Overview of parsing in Python: https://tomassetti.me/parsing-in-python/
+   1. Also perhaps of use: https://www.dabeaz.com/ply/ply.html#ply_nn0 
+
+
+### QGIS Plugin tutorials
+* https://www.e-education.psu.edu/geog489/l4_p9.html 
+* https://www.qgistutorials.com/en/docs/3/building_a_python_plugin.html 
+* https://digital-geography.com/build-qgis-plugin/
+* https://subscription.packtpub.com/book/application_development/9781783984985/1/ch01lvl1sec16/creating-a-qgis-plugin 
+* https://gis-ops.com/qgis-3-plugin-tutorial-plugin-development-explained-part-1/ 
+
+### Managing dependencies via packaging wheels
+* https://gis.stackexchange.com/a/349502 
+* https://realpython.com/python-wheels/#python-packaging-made-better-an-intro-to-python-wheels 
+
+### Adding submodule
+* https://github.blog/2016-02-01-working-with-submodules/