Move async-signature and signature-derive to toplevel (#1391)

These crates were previously nested under `signature/async` and
`signature/derive`, which complicates tooling that expects crates to be
in toplevel directories, and as things currently stand also meant that
releases of the `signature` crate accidentally included stale copies of
the other two crates.

This commit moves them to toplevel `async-signature` and
`signature-derive` directories.

Author: tarcieri

.github/workflows/async-signature.yml

@@ -3,14 +3,15 @@ name: async-signature
 on:
   pull_request:
     paths:
+      - "async-signature/**"
       - "signature/**"
       - "Cargo.*"
   push:
     branches: master
 
 defaults:
   run:
-    working-directory: signature/async
+    working-directory: async-signature
 
 env:
   CARGO_INCREMENTAL: 0
@@ -43,5 +44,5 @@ jobs:
       - run: cargo update -Z minimal-versions
       - uses: dtolnay/rust-toolchain@stable
       - uses: RustCrypto/actions/cargo-hack-install@master
-      - run: rm ../../Cargo.toml
+      - run: rm ../Cargo.toml
       - run: cargo hack test --release --feature-powerset

.github/workflows/signature.yml

@@ -4,6 +4,7 @@ on:
   pull_request:
     paths:
       - "signature/**"
+      - "signature-derive/**"
       - "Cargo.*"
   push:
     branches: master
@@ -78,7 +79,7 @@ jobs:
         with:
           toolchain: ${{ matrix.rust }}
       - run: cargo test --release
-        working-directory: signature/derive
+        working-directory: signature-derive
 
   doc:
     runs-on: ubuntu-latest

Cargo.lock

@@ -2,6 +2,7 @@
 resolver = "2"
 members = [
     "aead",
+    "async-signature",
     "cipher",
     "crypto",
     "crypto-common",
@@ -10,7 +11,7 @@ members = [
     "kem",
     "password-hash",
     "signature",
-    "signature/async",
+    "signature-derive",
     "universal-hash",
 ]
 

Cargo.toml

@@ -5,7 +5,7 @@ version       = "0.4.0-pre"
 authors       = ["RustCrypto Developers"]
 license       = "Apache-2.0 OR MIT"
 documentation = "https://docs.rs/async-signature"
-repository    = "https://github.com/RustCrypto/traits/tree/master/signature/async"
+repository    = "https://github.com/RustCrypto/traits/tree/master/async-signature"
 readme        = "README.md"
 keywords      = ["crypto", "ecdsa", "ed25519", "signature", "signing"]
 categories    = ["cryptography", "no-std"]
@@ -14,7 +14,7 @@ rust-version  = "1.60"
 
 [dependencies]
 async-trait = "0.1.9"
-signature = { version = "=2.2.0-pre", path = ".." }
+signature = ">= 2.0, <2.3"
 
 [features]
 digest = ["signature/digest"]