Hi! Good to see a new version!
However, I notice a few bug fixes I provided before haven't been added to 5.03, perhaps because they ended up lost in the comments section.
I hope they can be added in a future 5.04. So, to make things easier, I've uploaded my suggested
wpGoogleMaps.php fixes on Pastebin as a diff file listing only the suggested changes as well as the full PHP file. Both are v5.03-based.
The changes are basically for adding HTTPS support (so that the browser key doesn't appear broken due to loading insecure HTTP content on most browsers, and also so that the map actually works on Google Chrome, which blocks HTTP requests from HTTPS sites by default), and to fix some warnings that appear when WordPress' Debug Mode is active.
I hope this helps!