Re-introduce covariance for containers

rust-embedded / heapless

Heapless, `static` friendly data structures

Apache License 2.0

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Open sosthene-nitrokey opened 4 months ago

sosthene-nitrokey commented 4 months ago

MpMc and spsc::Queue are not migrated to the new pattern because they were already invariant due to the UnsafeCell.

Fix #501

sosthene-nitrokey commented 3 weeks ago

Rebased. CI is failing only because of CHANGELOG.