nomenclature

• Check that weight variables exist by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/133
• Restructure docs user-guide for toc-depth by @danielhuppmann in https://github.com/IAMconsortium/nomenclature/pull/140
• Docs/add howto by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/144
• Fix 2 typos : model-mapping by @luciecastella in https://github.com/IAMconsortium/nomenclature/pull/149
• Change path representation to posix style by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/150
• Add nightly run with multiple OS by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/151
• Add CITATION.cff by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/152
• Features/add cli folders by @luciecastella in https://github.com/IAMconsortium/nomenclature/pull/153
• Features/add cli option by @luciecastella in https://github.com/IAMconsortium/nomenclature/pull/147
• Check if user provided "mapping" attribute in assert_valid_structure by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/156
• Docs/numpystyle use by @luciecastella in https://github.com/IAMconsortium/nomenclature/pull/159
• Add common vs native region explanation by @phackstock in https://github.com/IAMconsortium/nomenclature/pull/161
• Features/default command cli by @luciecastella in https://github.com/IAMconsortium/nomenclature/pull/160

• @luciecastella made their first contribution in https://github.com/IAMconsortium/nomenclature/pull/149

Full Changelog: https://github.com/IAMconsortium/nomenclature/compare/v0.4...v0.5