v.0.6.16

[eao197]

This release adapts RESTinio to fmtlib-9.0.0.

Since v.0.6.16 RESTinio can be used with fmtlib-8 or fmtlib-9, but fmtlib-8 is still used in RESTinio development.

NOTE: restinio-0.6.14-full.* archives contain asio-1-21-1, fmt-8.1.1 and catch-2.13.9. Versions of 3rd party libraries in restinio/third_party updated to the latest versions:

expected-lite at commit 34524d46e538f1e6ed114d8f8409f7cd173d96e6.
optional-lite at commit ea502a6472c85dbc0174764df218a0c3443c6772.
string-view-lite at commit f7aca36f5caa05e451f6887aa707df89197e6de6.
variant-lite at commit f1af3518e4c28f12b09839b9d2ee37984cbf137a.

---

This discussion was created from the release v.0.6.16.