Update lazy_static to 1.0 and bump version

Author: Eijebong

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "string_cache"
-version = "0.7.0"  # Also update README.md when making a semver-breaking change
+version = "0.7.1"  # Also update README.md when making a semver-breaking change
 authors = [ "The Servo Project Developers" ]
 description = "A string interning library for Rust, developed as part of the Servo project."
 license = "MIT / Apache-2.0"
@@ -29,7 +29,7 @@ unstable = []
 
 [dependencies]
 precomputed-hash = "0.1"
-lazy_static = "0.2"
+lazy_static = "1"
 serde = "1"
 phf_shared = "0.7.4"
 debug_unreachable = "0.1.1"