Release v0.8.0 (#186)

* bump to 0.8.0 for release

* resolve the too-many-license-fields warning

Author: CleanCut

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "twirp-build"
-version = "0.7.0"
+version = "0.8.0"
 edition = "2021"
 description = "Code generation for async-compatible Twirp RPC interfaces."
 readme = "README.md"
@@ -11,7 +11,6 @@ categories = [
     "asynchronous",
 ]
 repository = "https://github.com/github/twirp-rs"
-license = "MIT"
 license-file = "./LICENSE"
 
 [dependencies]

crates/twirp-build/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "twirp"
-version = "0.7.0"
+version = "0.8.0"
 edition = "2021"
 description = "An async-compatible library for Twirp RPC in Rust."
 readme = "README.md"
@@ -11,7 +11,6 @@ categories = [
     "asynchronous",
 ]
 repository = "https://github.com/github/twirp-rs"
-license = "MIT"
 license-file = "./LICENSE"
 
 [features]