* add vector, lifo and fifo structures
* fix lint
* need more memory for coverage
* remove Vector wrappers and gas optimization
* refactor Vector testing
* revert package.json changes
* rename to DoubleEndedQueue
* rename and refactor
* refactor tests and expand coverage
* test for custom errors
* add changelog entry
* add docs
* add sample code and note about storage vs. memory
* add available since
* lint
* use underscore for struct members
* add struct documentation
* remove SafeCast in length
* rename i -> index and improve docs
Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
