Crates.io version fails during compilation

[lamafab]

Description

The crates.io version of this repository results in a compilation error. Cloning directly from this repo via git works just fine.

Reproduce

When you set Cargo.toml as this:

substrate-subxt = "0.13.0"

It results in:

error[E0277]: the trait bound `<T as frame::system::System>::Index: From<i32>` is not satisfied
  --> /home/anon/.cargo/registry/src/github.com-1ecc6299db9ec823/substrate-subxt-0.13.0/src/extrinsic/signer.rs:90:55
   |
90 |         self.nonce = self.nonce.map(|nonce| nonce + 1.into());
   |                                                       ^^^^ the trait `From<i32>` is not implemented for `<T as frame::system::System>::Index`
   |
   = note: required because of the requirements on the impl of `Into<<T as frame::system::System>::Index>` for `i32`
help: consider further restricting the associated type
   |
89 |     pub fn increment_nonce(&mut self) where <T as frame::system::System>::Index: From<i32> {
   |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0277`.
error: could not compile `substrate-subxt`

Workaround

substrate-subxt = { version = "0.13.0", git = "https://github.com/paritytech/substrate-subxt.git" }

[niklasad1]

This was fixed by https://github.com/paritytech/substrate-subxt/pull/217/files

//cc @ascjones release 0.14 with substrate 2.0.1 support? :)

[ascjones]

#226

[ascjones]

Released #226