* various typing fixes for NFT support that were originally missed
* add optional faucet URL to fundWallet
* run docgen and commit changes
* fixes integration tests
* rename: branch develop -> main; master -> old-master
* Update all references to `master` and `develop`
* Update the GitHub pages docs
Co-authored-by: Jackson Mills <jmills@ripple.com>, Elliot Lee <intelliot@ripple.com>