A new section on feature requests and enhancements was added to the README to guide users on how to get their features prioritized. Similarly, the bug report template was expanded to inform users about the current development scope and to provide options for contributing or supporting the project financially.

Added a new condition to determine the release URL formatting. Now, apart from the 'shorter' flag, a '/' character in the release "tag_name" also leads to usage of the SHORT_RELEASE_URL_FORMAT. This way, the formatting will be more fit for releases with a '/' in their tag name.

Introduced a new regular expression to handle 'pre' version formats in the version.py script. This regex specifically matches and reformats versions preceded by 'pre-', enabling more flexible version formatting for this case. This inclusion enriches the set of version formats around the 'pre' keyword that our code can interpret.

Updated CHANGELOG.md with the latest changes including fixing source tarball links and improved detection of pre-releases. Also bumped the program version to 3.5.1 in src/lastversion/__about__.py to reflect these changes.