* feat(client): add http2 option
* chore(deps): update httpx
* refactor(gtoken): gtoken should always accept client argument in order to follow client's options
* chore(ci): change dist to ubuntu 18.04 bionic
* chore:test available service_urls and multi-lang result in different service_urls (#216)
* feat(models): add Base model
* test: reuse test client
* feat(client): return Translated and Detected with the original response
* test(client): ConnectError has been replaced with httpx.ConnectTimeout
* fix: possible merge conflict
* chore(docs): add a description for checking http2
* chore(deps): add sphinx to dev deps
* test(client): httpx will raise ConnectError in some conditions
omg i missed
Co-authored-by: Terry Zhuo <terryzhuo25@gmail.com>
