Bump to 3.1.0

Cargo.lock

@@ -2862,7 +2862,7 @@ checksum = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
 
 [[package]]
 name = "openethereum"
-version = "3.1.0-rc1"
+version = "3.1.0"
 dependencies = [
  "ansi_term 0.10.2",
  "atty",
@@ -3227,7 +3227,7 @@ dependencies = [
 
 [[package]]
 name = "parity-version"
-version = "3.1.0-rc1"
+version = "3.1.0"
 dependencies = [
  "parity-bytes",
  "rlp 0.3.0",

Cargo.toml

@@ -2,7 +2,7 @@
 description = "OpenEthereum"
 name = "openethereum"
 # NOTE Make sure to update util/version/Cargo.toml as well
-version = "3.1.0-rc1"
+version = "3.1.0"
 license = "GPL-3.0"
 authors = [
 	"OpenEthereum developers",

util/version/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "parity-version"
 # NOTE: this value is used for OpenEthereum version string (via env CARGO_PKG_VERSION)
-version = "3.1.0-rc1"
+version = "3.1.0"
 authors = ["Parity Technologies <admin@parity.io>"]
 build = "build.rs"