v3.26.0

Added:

• conda_build_tool setting with four different options: conda-build, mambabuild (default),
  conda-build+conda-libmamba-solver and conda-build+classic. - #1732
• Add conda_install_tool and conda_solver configuration options to allow choosing between
  mamba and conda (with classic or libmamba solvers) as the dependency
  handling tools. (#1762, #1768)
• Add additional_zip_keys configuration option for migrations (#1764)

Changed:

• Unified Windows build scripts to avoid duplication of template logic in Github Actions and Azure Pipelines. (#1761)
• Use strict channel priority on Linux and macOS. (#1768)
• Use python-build to create sdist #1760

Deprecated:

• build_with_mambabuild boolean option is deprecated. Use conda_build_tool: mambabuild instead. - #1732

Fixed:

• Ensure undefined Jinja variables are rendered as the variable name, restoring Python 2-like behaviour. (#1726 via #1727)
• Use name-only specs in conda update and conda uninstall subcommands. (#1768)
• Catch negative exit codes on Windows. (#1763)
• Fixed bug in the display of grouping commands in the Travis CI logging utilities. (#1730)

Authors:

• Jaime Rodríguez-Guerra
• Uwe L. Korn
• John Kirkham
• Peter Williams
• Bela Stoyan
• Klaus Zimmermann