Merge branch 'release/0.4' into develop

CHANGELOG.md

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+# 0.4 (2020-03-09)
+
+Kind of a big one. Obviously because in addition to EDSM, I can now do some 
+stuff with Spansh’s database. At this point I’m not sure if I want to keep it in 
+the kind of hacky quick&dirty state it’s in right now or do another abstraction 
+layer in addition to EDSM’s. Probably will be too lazy.
+
+In addition to that the compiled version of the scripts for windows will now be 
+a single executable file per script instead of having all the libraries stuff in 
+subfolders. It’s cleaner that way, IMO.
+
+## explorationtools.py
+
+* `findcommander` now gives a last seen date for the position
+
+known bugs:
+
+* I need to fix the way the commander’s last seen is pulled. Right now searching 
+  for a commander will error out if their profile is public, but their flight 
+  logs (and thus the last updated time stamp) is not.
+
+## spansh.py
+
+* added `spansh.py` for accessing data from https://spansh.co.uk
+* see the README for what it can do right now