* Update versioning on master to 5.4.0-alpha.0
* updates for 1.80 and other accumulated warnings
* further warning cleanups
* move dead code tag to function defn rather than module
* remove (almost) all unwrap calls
* replace with ? operator
* build script will now work offline and in many other scenarios where the web wallet may not be downloaded
* Update secp dependency to use crates.io version
* Add more details to various Cargo.toml
* Remove use of env variables that aren't reliably provided by cargo
* first addition of static wallet file server
* rustfmt
* add custom build functions to download and untar particular release of the web-wallet
* rustfmt
* remove comments