* Use swift-crypto for hashing requirements * Remove swift 5.0 as it won't compile * Optimization - stop recreating DateFormatter * Ressurected AWSCrypto so we can support earlier OS versions * Update CI for workdir issue, remove libssl-dev
The purpose of this lib is not to supply credentials
Instead construct signed request from url, method, headers and body Added helper functions to HTTPClient.Request extension
Adam Fowler