Prepare master for 0.10 breaking changes

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "reqwest"
-version = "0.9.19" # remember to update html_root_url
+version = "0.10.0-alpha.0" # remember to update html_root_url
 description = "higher level HTTP client library"
 keywords = ["http", "request", "client"]
 repository = "https://github.com/seanmonstar/reqwest"
@@ -10,6 +10,8 @@ readme = "README.md"
 license = "MIT/Apache-2.0"
 categories = ["web-programming::http-client"]
 
+publish = false
+
 [package.metadata.docs.rs]
 all-features = true
 

README.md

@@ -14,6 +14,10 @@ An ergonomic, batteries-included HTTP Client for Rust.
 - Cookie Store
 - [Changelog](CHANGELOG.md)
 
+> *NOTE*: reqwest's [master](https://github.com/seanmonstar/reqwest) branch is currently
+preparing breaking changes, for most recently released code, look to the
+[0.9.x](https://github.com/seanmonstar/reqwest/tree/0.9.x) branch.
+
 ## Example
 
 ```rust,no_run