chore: Prepare aux crates for release (#955)

tonic-web/Cargo.toml

@@ -4,7 +4,7 @@ categories = ["network-programming", "asynchronous"]
 description = """
 grpc-web protocol translation for tonic services.
 """
-documentation = "https://docs.rs/tonic-web/0.2.0/tonic-web/"
+documentation = "https://docs.rs/tonic-web/0.3.0/tonic-web/"
 edition = "2018"
 homepage = "https://github.com/hyperium/tonic"
 keywords = ["rpc", "grpc", "grpc-web"]
@@ -12,7 +12,7 @@ license = "MIT"
 name = "tonic-web"
 readme = "README.md"
 repository = "https://github.com/hyperium/tonic"
-version = "0.2.0"
+version = "0.3.0"
 
 [dependencies]
 base64 = "0.13"