Merge pull request facebook#76 from huitseeker/version-bump

Bump Crate version => 0.3.0-pre.1

Author: huitseeker

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "opaque-ke"
-version = "0.2.1"
+version = "0.3.0-pre.1"
 repository = "https://github.com/novifinancial/opaque-ke"
 keywords = ["cryptography", "crypto", "opaque", "passwords", "authentication"]
 description = "An implementation of the OPAQUE password-authenticated key exchange protocol"