* Implement some js helpers for associated tokens
* Create integration test and fix hard-coding in spl-associated-token
* Run lint:fix and pretty:fix
* Run flow as well...
* More robust test fixture setup
* Revert api breaking part
* Fix tests...
* Populate ts/flow type definitions
* Improve test a bit
* More consistent arg order; docs; more tests
* lints and pretty
* type definition updates and test tweaks
* More simplification...
* More cleanup
* Address review comments and small cleanings
* Bump the version
* Fix lint check in CI
* `npm run lint` now checks that code is properly formatted, instead of
running the formatter
* Add extra commands to run the linting, include ts definitions file
* Update flow-bin, fix type errors that come up
* Clarify lint vs lint:fix as requested