Bump PyArrow dev requirement for security (#41)

Append to file when opened with mode `a` (#38)

* Append to file when opened with mode `a`

Relates to [ML-4910](https://jira.iguazeng.com/browse/ML-4910).

* Fix cache to fix transient test failure, add debug flag

Fix set-version.py script

Add missing dev dependency

ML-2572: Fix caching bug (#27)

* ML-2572: Fix caching bug

* Minor refactoring

* Fix GC bug + optimizations + locking + tests

* Add puts to same key

* Improve tests

Don't print traceback on `FileNotFoundError` (#26)

Print traceback rather than silencing exceptions

Overriding fsspec behaviour.

Also improves an error message.

disable testing on release until gibhub reachable setup is available

Invalidate cache entry on rm. (#18)

dist doesn't need to depend on dev-env.