Merge pull request #310 from openziti/openssl-no-ktls

openssl: disable KTLS(kernel TLS offload) with custom IO

Merge pull request #309 from openziti/connect-on-loop

Connect on loop

Merge pull request #308 from openziti/improve-logging

improve logging with connection detail

Merge pull request #304 from openziti/null.check.conn_timer

check conn_timer for null before calling uv_timer_stop

Merge pull request #303 from openziti/http-client-connector

HTTP client: add support for custom connectors

Merge pull request #298 from openziti/misc-fixes

use proper `size_t` formatting

Merge pull request #297 from openziti/apple-system-roots-verification

apple: use native trust verification if system CA roots are used

Merge pull request #295 from openziti/misc-fixes

Misc fixes

Merge pull request #294 from openziti/use-http_proxy-env

initialize default/global connector with HTTP proxy if env is set

Merge pull request #292 from openziti/cert-to-string

Cert to string