v0.4.0 - add basic auth option

feat: add Basic Auth option

v0.3.0 - add Origin and intelligent User-Agent to all http requests

feat: add Origin and User-Agent to identify SDK version and its callers

v0.2.0 - add stable SDK for allsrv demo pkg

this also drop v0.1.0, as keeping it around didn't add any value. Rewrote history to accommodate this