Fix subpackage access through attributes in Java imports.

Fix formatting error in 4.3 release notes.

Fix syntax typo in README

Include Python 3.13 in list of supported versions.

AppVeyor no longer supports python 3.6 and fix link in release notes.

Avoid 'for' loop initial declarations for improved compatibility.

Update version for release of 4.1.0

Update version for release of 4.0.3

Fixed library location for Python 3.10.

Update travis-ci configuraton for Python 3.10 and Java 17.