bump major version number

Because this version breaks backwards compatibility for Python 3.8 users
1 files changed, 1 insertions(+), 1 deletions(-)

M yoyo/__init__.py
M yoyo/__init__.py +1 -1
@@ 34,4 34,4 @@ from yoyo.migrations import read_migrati
 from yoyo.migrations import step
 from yoyo.migrations import transaction
 
-__version__ = "8.2.1.dev0"
+__version__ = "9.0.0.dev0"