Update to hauth2 0.4.*
Add a github OAuth2 provider
fix cabal file: take into account the split of network from version 2.6,
and avoid authenticate 1.3.2.6 which gave the following strange error:
...
Building authenticate-1.3.2.6...
Preprocessing library authenticate-1.3.2.6...
[1 of 9] Compiling OpenId2.XRDS     ( OpenId2/XRDS.hs, dist/dist-sandbox-a1429708/build/OpenId2/XRDS.o )
[2 of 9] Compiling Web.Authenticate.OpenId.Providers ( Web/Authenticate/OpenId/Providers.hs, dist/dist-sandbox-a1429708/build/Web/Authenticate/OpenId/Providers.o )
[3 of 9] Compiling Web.Authenticate.BrowserId ( Web/Authenticate/BrowserId.hs, dist/dist-sandbox-a1429708/build/Web/Authenticate/BrowserId.o )

Web/Authenticate/BrowserId.hs:15:22:
    Module ‘Data.Conduit’ does not export ‘MonadBaseControl’

Web/Authenticate/BrowserId.hs:15:40:
    Module ‘Data.Conduit’ does not export ‘MonadResource’
Failed to install authenticate-1.3.2.6
use tls manager argument in fetchGithubProfile (introduced in 'Version upgrade (hoauth2 0.4.1)'.)
remove redundant bracket