The localtime crate was defined by cloudhead, and is a minimal repository with a single lib.rs.

Instead of using it as an external dependency, copy the code directly into a new workspace crate radicle-localtime.

The default serde implementation goes through the LocalTime’s seconds values rather than milliseconds, since this is the more common format. This allows the removal of the serde_ext functions. The one place milliseconds was used was for the radicle::cob::common::Timestamp type, where the Serialize and Deserialize implementations are manually written.

It also adds a schemars feature to remove schemars_ext functions in radicle as well.

Rebase