v3.7.4

Added:

• Use the anaconda API to retrieve the latest version number of conda-smithy and conda-forge-pinning.
• Pass CPU_COUNT from the host environment to the docker build.
  (Convenient when building locally.)
• Add a flag to register-github to create a private repository.
• Add a private_upload key in conda config file. If set to True Anaconda upload will use the --private flag.
• Removes /opt/ghc on Azure Linux images to free up space
• Additional secrets can be passed to the build by setting secrets: ["BINSTAR_TOKEN", "ANOTHER_SECRET"]
  in conda-forge.yml. These secrets are read from the CI configuration and
  then exposed as environment variables. To make them visible to build scripts,
  they need to be whitelisted in build.script_env of meta.yaml.
  This can, e.g., be used to collect coverage statistics during a build or test
  and upload them to sites such as coveralls.

Changed:

• Return type of feedstocks.clone_all() from None to list of repositories
• Link to list of SPDX licenses in lint message.

Fixed:

• Use AzureConfig in render_README instead of calling a raw requests. It allows rendering on a private Azure CI organization.
• CI skeleton properly sets the build number
• use SPDX identifier for feedstock license
• Allow an empty conda-forge.yml.
• The repo name for output validation is now extracted in the CI services to avoid
  issues with bad rerenders for clones to non-standard locations.

Security:

• Added --suppress-variables so that CI secrets cannot be leaked by conda-build into CI logs.

Authors:

• Matthew R Becker
• Christopher J. Wright
• Matthew R. Becker
• Hadrien Mary
• Julian Rüth
• Uwe L. Korn
• John Kirkham
• Duncan Macleod
• Axel Huebl
• Thomas Hopkins
• Stuart Berg