general: minor cleanup

- get rid of unnecessary globs in get_files (they should be in config if the user wishes)
- get rid of some old kython imports
- do not convert Path twice in foursquare (so CPath works correctly)

my/arbtt.py

@@ -3,6 +3,7 @@
 '''
 
 REQUIRES = ['ijson', 'cffi']
+# NOTE likely also needs libyajl2 from apt or elsewhere?
 
 
 from pathlib import Path