Remove crate_type from cargo.toml + remove cargo.lock

[MartinKavik]

It should resolve problem with docs building:

• Website & Readme.md - community feedback #303 (comment)
• rlib and cdylib crates are marked as 'not a library' rust-lang/docs.rs#503 (comment)

cc @daxpedda

[daxpedda]

Great!
While we are at it, libraries are not supposed to ship Cargo.lock:

If you’re building a non-end product, such as a rust library that other rust packages will depend on, put Cargo.lock in your .gitignore.

https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html

[MartinKavik]

@daxpedda done, thanks

[MartinKavik]

So.. I've removed cargo.lock, but this file is required for cache:

seed/.github/workflows/main.yml

Line 34 in 8c318a1

key: ${{ runner.OS }}-build-${{ hashFiles('**\Cargo.lock') }}

Do you have an idea how to use cache without that file?

[MartinKavik]

I've commented out Rust cache.

• It seems that it wasn't working properly even before this change.
• GHA cache limit is too small so it's possible it wouldn't work even configured properly.
• I suggest to activate and configure it later.

[daxpedda]

Do you have an idea how to use cache without that file?

I only used travis until now, it doesn't have that problem.