Merge 1248a9e into 9f8cffe

Cargo.toml

@@ -3,9 +3,7 @@
 members = [
     "abi",
     "core",
-    "lang",
     "lang2",
-    "model",
     "prelude",
     "utils",
 ]

LICENSE_TEMPLATE

@@ -1,4 +1,4 @@
-// Copyright 2018-2019 Parity Technologies (UK) Ltd.
+// Copyright {20\d{2}}-{20\d{2}} Parity Technologies (UK) Ltd.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

core/Cargo.toml

@@ -23,9 +23,16 @@ ink_prelude = { path = "../prelude/", default-features = false }
 
 scale = { package = "parity-scale-codec", version = "1.1", default-features = false, features = ["derive", "full"] }
 type-metadata = { git = "https://github.com/type-metadata/type-metadata.git", default-features = false, features = ["derive"], optional = true }
-derive_more = { version = "0.99.2", default-features = false, features = ["from"] }
+derive_more = { version = "0.99.2", default-features = false, features = ["from", "display"] }
 smallvec = { version = "1.0", default-features = false, features = ["union"] }
 cfg-if = "0.1"
+num-traits = { version = "0.2.1", default-features = false, feature = ["i128"] }
+
+# Only used in the off-chain environment.
+#
+# Sadly couldn't be marked as dev-dependency.
+# Never use this crate outside of the off-chain environment!
+rand = { version = "0.7", default-features = false, features = ["alloc"] }
 
 [features]
 default = ["test-env"]
@@ -38,6 +45,8 @@ std = [
     "ink_prelude/std",
     "scale/std",
     "type-metadata/std",
+    "rand/std",
+    "num-traits/std",
 ]
 ink-generate-abi = [
     "ink_abi",