Print CBOR_TYPE_BYTESTRING value as hex string

Add a unit test + minor fixes for cbor_describe

Bump requests from 2.27.1 to 2.31.0 in /doc/source

Bumps [requests](https://github.com/psf/requests) from 2.27.1 to 2.31.0.
- [Release notes](https://github.com/psf/requests/releases)
- [Changelog](https://github.com/psf/requests/blob/main/HISTORY.md)
- [Commits](https://github.com/psf/requests/compare/v2.27.1...v2.31.0

)

---
updated-dependencies:
- dependency-name: requests
  dependency-type: direct:production
...
Signed-off-by: dependabot[bot] <support@github.com>

make CMAKE_SKIP_INSTALL_ALL_DEPENDENCY an option

Add Cirrus-CI config file to build & test on FreeBSD

Test on FreeBSD 12.4 and FreeBSD 13.2, the two currently supported
releases.

Fix standard note in docs

Add a CBOR to cJSON example

Shut down appveyor in favor of circleci

Update docs for STD94

Release 0.10.2

README: Remove CBOR_CUSTOM_ALLOC flag

According to documentation:
* https://libcbor.readthedocs.io/en/latest/getting_started.html#building-installing-libcbor

> CBOR_CUSTOM_ALLOC has been removed. Custom allocators (historically a controlled by a build flag) are always enabled.

Documentation seems conflicting.

Set up Windows CI including tests, make tests cross-platform