* fix: replace node buffers with uint8arrays
All usage of node buffers have been replaced with uint8arrays.
BREAKING CHANGES:
- Where node Buffers were returned, now Uint8Arrays are
* chore: remove commented code
* feat: add exporting/importing of ed25519 keys in libp2p-key format
* feat: add libp2p-key export/import support for rsa and secp keys
* chore: dep bumps
* chore: update aegir
* refactor: import and export base64 strings
* refactor: simplify api for now
* chore: fix lint
* refactor: remove extraneous param
* refactor: clean up
* fix: review patches
* test: Add failing tests
* fix: Fix some failing tests
* fix: various fixes on garbage error handling and respective tests
* tests: increased timeout for test timing out in CI
* tests: increasing test timeout to please the CI gods
* tests: increasing test timeout to please the CI gods
* fix: for when unMarshallPrivateKey is called with null or undefined key