* Make cache insert / update more explicit. Prevents potential race condition in multi-threaded environment.
0.3.19
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* Update pinned version of Pyproj to allow for Python 3.7 support * Update to test / support Python 3.7
0.3.18
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* Pin pyproj to 1.9.5.1 version.
0.3.17
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* Blacken. * Add dev requirements back in. * Add FTP timeout of 60 seconds. * Move Pipfile to requirements.txt. * Update cartopy terrain. * Add an FTP timeout.