Support pre 1.77 #840
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Support pre 1.77 #840
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This PR makes defmt compatible with versions of rustc smaller than
1.77. It achieves this by allowing to excludedefmt::Formatimplementations for types which got stabilized under theip_in_corefeature. Note that those types are included by default, but can be excluded by disabling the default cargo features.Fixes #833