Strip redundant files from Cargo packages of crates

Author: tyranron

Cargo.toml

@@ -19,6 +19,7 @@ repository = "https://github.com/cucumber-rs/cucumber"
 readme = "README.md"
 categories = ["asynchronous", "development-tools::testing"]
 keywords = ["cucumber", "testing", "bdd", "atdd", "async"]
+include = ["/src/", "/LICENSE-*", "/README.md", "/CHANGELOG.md"]
 
 [package.metadata.docs.rs]
 all-features = true

codegen/Cargo.toml

@@ -15,6 +15,7 @@ repository = "https://github.com/cucumber-rs/cucumber"
 readme = "README.md"
 categories = ["asynchronous", "development-tools::testing"]
 keywords = ["cucumber", "codegen", "macros"]
+exclude = ["/tests/"]
 
 [lib]
 proc-macro = true