Update `compile_fail` tests for 1.94 Rust (#543)

Upgrade `convert_case` crate from 0.10 to 0.11 version (#542)

Omit generating code for unspecified `owned` type (#531, #530)

Replace `unicode-xid` crate with `unicode-ident` (#538)

Update `compile_fail` tests for 1.93 Rust (#539)

Correct release date

Prepare 2.1.1 release (#529)

Fix `derive(Error)` expansion hygiene (#527, #526)

Remove glob imports in `derive(From)` tests to mend 1.94 nightly Rust regression (#528, #525)

Prepare 2.1.0 release (#521)

Allow using enum-level attributes for non-`Display` formatting traits as default (#495, #142)

Allow skipping fields for `Add`/`AddAssign`/`Mul`/`MulAssign`-like derives (#472, #437, #138)

Upgrade `convert_case` requirement from 0.9 to 0.10 version (#520)

Upgrade `actions/checkout` from 5 to 6 version (#519)

Upgrade `convert_case` crate from 0.8 to 0.9 version (#517)