chore(release): Bump version to 0.8.0 (#452)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: talmo

sleap_io/version.py

@@ -3,4 +3,4 @@
 # Define package version.
 # This is read dynamically by setuptools in pyproject.toml to determine the release
 # version.
-__version__ = "0.7.1"
+__version__ = "0.8.0"