Clippy is returning some warnings. Let's fix or explicitly ignore
them. In particular:
- In `components/imageproc/src/lib.rs`, we implement `Hash` explicitly
but derive `PartialEq`. We need to maintain the property that two
keys being equal implies the hashes of those two keys are equal.
Our `Hash` implementations preserve this, so we'll explicitly ignore
the warnings.
- In `components/site/src/lib.rs`, we were calling `.into()` on some
values that are already of the correct type.
- In `components/site/src/lib.rs`, we were using `.map(|x| *x)` in
iterator chains to remove a level of indirection; we can instead say
`.copied()` (introduced in Rust v1.36) or `.cloned()`. Using
`.copied` here is better from a type-checking point of view, but
we'll use `.cloned` for now as Rust v1.36 was only recently
released.
- In `components/templates/src/filters.rs` and
`components/utils/src/site.rs`, we were taking `HashMap`s as
function arguments but not generically accepting alternate `Hasher`
implementations.
- In `src/cmd/check.rs`, we use `env::current_dir()` as a default
value, but our use of `unwrap_or` meant that we would always
retrieve the current directory even when not needed.
- In `components/errors/src/lib.rs`, we can use `if let` rather than
`match`.
- In `components/library/src/content/page.rs`, we can collapse a
nested conditional into `else if let ...`.
- In `components/library/src/sorting.rs`, a function takes `&&Page`
arguments. Clippy warns about this for efficiency reasons, but
we're doing it here to match a particular sorting API, so we'll
explicitly ignore the warning.
* Add hard_link_static config option.
* Copy or hardlink file depending on an argument.
Modify the call sites for `copy_file` to account for the extra argument.
* Plug the config setting through to copy_file.
Don't apply the config option to theme's static directory.
* Update documentation.
* Backticks make no sense in this comment.
* Addressing PR comments.
* Be consistent with argument naming.
* actix_web::fs is now found in the actix-files crate.
* NotFoundHandler is now implemented using ErrorHandlers and the
path to 404.html is provided to the not_found() function using
actix_web::App::data. This setup allows for additional StatusCodes
to be handled in the future, if desired.
* Cleanly serving index.html files for requests to directories now
appears to be possible simply by using index_file("index.html") in
the static files service, so handle_directory() is removed.
