Fix release Oct 8, 2021

[x] Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
[na] Any modified or new methods or classes have helpful JavaDoc and code is thoroughly commented
[x] The description lists all applicable issues this PR seeks to resolve
[na] The description lists any configuration setting(s) that differ from the default settings
[ ] All tests and CI builds passing
[x] The description lists all relevant PRs included in this release (remove this if not merging to master)
[ ] Code coverage does not significantly worsen (ideally it improves) (remove this if not merging to master)

This release contains #333.

conveyal / gtfs-lib