chore(version-up): v0.5.3

Versions were chosen to allow for maximum flexibility
for users of this library, even if this breaks at compile time
thanks to incompatibilities in dependencies.

Rather that, than cargo claiming that it cannot use
a certain version.

Of course, once everything is >= 1.0, one can change to
standard semver compatiblity.

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "yup-oauth2"
-version = "0.5.2"
+version = "0.5.3"
 authors = ["Sebastian Thiel <byronimo@gmail.com>"]
 repository = "https://github.com/Byron/yup-oauth2"
 description = "A partial oauth2 implementation, providing the 'device' authorization flow"
@@ -11,27 +11,27 @@ license = "MIT"
 build = "src/build.rs"
 
 [dependencies]
-chrono = "*"
-time = "*"
-log = "*"
-mime = "*"
-url = "*"
-hyper = ">= 0.5.0"
-itertools = "*"
-serde = ">= 0.5.0"
-serde_json = "*"
-serde_macros = { version = "*", optional = true }
+chrono = ">= 0.2"
+time = ">= 0.1"
+log = ">= 0.3"
+mime = ">= 0.1"
+url = ">= 0.5"
+hyper = ">= 0.7.0"
+itertools = ">= 0.4"
+serde = ">= 0.6"
+serde_json = ">= 0.6"
+serde_macros = { version = ">= 0.6", optional = true }
 
 [features]
 default = ["with_syntex"]
 nightly = ["serde_macros"]
 with_syntex = ["serde_codegen", "syntex"]
 
 [build-dependencies]
-syntex = { version = "*", optional = true }
-serde_codegen = { version = "*", optional = true }
+syntex = { version = ">= 0.2", optional = true }
+serde_codegen = { version = ">= 0.6", optional = true }
 
 [dev-dependencies]
-getopts = "*"
-open = "*"
-yup-hyper-mock = ">= 1.0.0"
+getopts = "0.2"
+open = "1.1"
+yup-hyper-mock = "1.3.0"