Prepare for 0.3

Author: cuviper

Cargo.toml

@@ -8,10 +8,11 @@ categories = ["algorithms", "data-structures", "science", "no-std"]
 license = "MIT/Apache-2.0"
 name = "num-complex"
 repository = "https://github.com/rust-num/num-complex"
-version = "0.2.4"
+version = "0.3.0-pre"
 readme = "README.md"
 build = "build.rs"
 exclude = ["/ci/*", "/.travis.yml", "/bors.toml"]
+publish = false
 
 [package.metadata.docs.rs]
 features = ["std", "serde", "rand"]