Release v2.0.0

OpenBursh is available on crates.io under the name openbrush.

OpenBrush uses a specific version of the ink! due to use-ink/ink#1278. And it is renamed brush -> openbrush. It is breaking change so now you need to use a new version like:

ink_primitives = { version = "~3.2.0", default-features = false }
ink_metadata = { version = "~3.2.0", default-features = false, features = ["derive"], optional = true }
ink_env = { version = "~3.2.0", default-features = false }
ink_storage = { version = "~3.2.0", default-features = false }
ink_lang = { version = "~3.2.0", default-features = false }
ink_prelude = { version = "~3.2.0", default-features = false }

scale = { package = "parity-scale-codec", version = "3", default-features = false, features = ["derive"] }
scale-info = { version = "2", default-features = false, features = ["derive"], optional = true }

openbrush = { version = "~2.0.0", default-features = false }