Version 0.2.6 (with derive 0.2.1)

Release 0.2.2 of git-testament

version: Roll back version change in derive dev-dep as it's not needed

Signed-off-by: Daniel Silverstone <[email protected]>

Cargo.toml: Update git-testament-derive version for new 0.2

Signed-off-by: Daniel Silverstone <[email protected]>

Cargo.toml: Update version of derive macro for release

Signed-off-by: Daniel Silverstone <[email protected]>