Bump to 0.9.0-rc1 for testing

CHANGELOG.txt

diff --git a/CHANGELOG.txt b/CHANGELOG.txt
index 0c3894b..5a27772 100644
--- a/CHANGELOG.txt
+++ b/CHANGELOG.txt
@@ -1,4 +1,4 @@
-0.9.0 (2023-03-03)
+0.9.0 (2023-03-26)
     * Drop support for Python 2.X, 3.5, and 3.6;
       Add support for Python 3.10, 3.11
       (https://github.com/wolever/parameterized/pull/153)

parameterized/__init__.py

diff --git a/parameterized/__init__.py b/parameterized/__init__.py
index 9dae02d..eb182c2 100644
--- a/parameterized/__init__.py
+++ b/parameterized/__init__.py
@@ -1,3 +1,3 @@
 from .parameterized import parameterized, param, parameterized_class
 
-__version__ = "0.9.0"
+__version__ = "0.9.0-rc1"