BREAKING CHANGE: buffers exposed as binary, as a UTF-8 string (#94)

clang format w/ CI setup

code review.

code review.

code review.

Bump version: 4.0.3 → 4.0.4 (#97)

Bump version: 4.0.3 → 4.0.4

code format.

make test.py happy on new quest server version.

code format.

add timeout per call

error code format.

consume response body to reuse connection pool.

code review.

handle error.

buffer_view passed by value.

add cxx20 tests support in ci

code review

update lock version

update ureq&webpki-roots&rustls to new version.

code format.

fix peek signature for c++

fix compile error on GUN

fix compile error on GUN

fix compile error on GUN

fix peek signature for c++

fix test failed.