Conan can't work on OpenBSD.

ERROR: Invalid setting 'OpenBSD' is not a valid 'settings.os' value.
Possible values are ['AIX', 'Android', 'Arduino', 'Emscripten', 'FreeBSD', 'Linux', 'Macos', 'Neutrino', 'SunOS', 'Windows', 'WindowsCE', 'WindowsStore', 'iOS', 'tvOS', 'watchOS']

quantity_point should be updated to mirror the latest changes to quantity and provide interoperability with other libraries (i.e. std::chrono::time_point).

Package and Environment Details (include every applicable attribute)

• Package Name/Version: openssl/1.1.1d
• Operating System+version: Linux CentOS 7.7.1908
• Compiler+version: GCC 7.3.1 (devtoolset-7)
• Docker image: **centos:7.7.190

The example in https://docs.conan.io/en/latest/integrations/ci/appveyor.html is invalid (indentation, cmmd). I am new to appveyor. I guess it should be:

version: 1.0.{build}
platform:
  - x64

install:
  - cmd: echo "Downloading conan..."
  - cmd: set PATH=%PATH%;%PYTHON%/Scripts/
  - cmd: pip.exe install conan
  - cmd: conan user # Create the conan data directory
  - cmd: cona