prepare for release: v2.0.0 (#529)

Author: till-m

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "bayesian-optimization"
-version = "1.5.1"
+version = "2.0.0"
 description = "Bayesian Optimization package"
 authors = ["Fernando Nogueira"]
 license = "MIT"
@@ -52,4 +52,4 @@ build-backend = "poetry.core.masonry.api"
 exclude_lines = [
     "pragma: no cover",
     "if TYPE_CHECKING:",
-]
+]