fix release

.ci/release_check.py

@@ -14,10 +14,11 @@
     assert version in f.read()
 
 # make sure that version itself was updated
-r = requests.get("https://pypi.org/pypi/iminuit/json")
-releases = r.json()["releases"]
+pypi_versions = []
+for prefix in ("pypi", "test.pypi"):
+    url = f"https://{prefix}.org/pypi/iminuit/json"
+    r = requests.get(url)
+    releases = r.json()["releases"]
+    pypi_versions += [parse_version(v) for v in releases]
 
-pypi_versions = [parse_version(v) for v in releases]
-this_version = parse_version(version)
-
-assert this_version not in pypi_versions
+assert parse_version(version) not in pypi_versions

doc/changelog.rst

@@ -5,8 +5,8 @@
 Changelog
 =========
 
-2.0 (???, 2020)
------------------
+2.0rc1 (???, 2020)
+------------------
 This is a breaking change for iminuit. Interface that was deprecated in 1.x has been removed. In addition, breaking changes were made to the interface to arrive at a clean minimal state that is easy to learn. Under the hood, Cython was replaced with pybind11 to generate the bindings to the C++ Minuit2 library. This simplified the code considerably (Cython is very bad at generating correct C++ bindings, while it is breeze with pybind11).
 
 Removed and changed interface (breaking changes)

src/iminuit/version.py

@@ -1 +1 @@
-__version__ = "2.0-beta-4"
+__version__ = "2.0rc1"