increase subpub info stats from 40 to 120 seconds

chi: log in debug instead of info

set maximum subpub message size to 8M entries and 256 MiB

fix bare unmarshal limits

increase bare max unmarshal size and array lenght

update timeous and enable heartbeat ping

do not sign empty requests

Merge pull request #9 from vocdoni/router-error

router: always set MessageContext in getRequest

reduce timeouts and force close body on send()

Remove TLSConfig direct assignation

Merge pull request #7 from vocdoni/dcc/client-certificates-support

go-chi: use ThrottleBacklog instead of Throttle

Fix TLSConfig configuration

fix signature decoding