Change current version to be the next minor one

That's actually what master is pointing at right now.

spyder/__init__.py

@@ -31,7 +31,7 @@
 
 from packaging.version import parse
 
-version_info = (7, 0, 0, "dev0")
+version_info = (6, 1, 0, "a1", "dev0")
 
 __version__ = str(parse('.'.join(map(str, version_info))))
 __installer_version__ = __version__