The source code for Leaflet Maps Marker is now available on Github, which allows easier collaboration for new features/bugfixes among other advantages. I will also use the Git issue tracker for bugs and feature requests (uservoice-forum has been removed).
The trunk (master) will contain the latest stable version also available from the WordPress plugin repository, commits for next releases will be made in the according branches (e.g. 1.3).
Please feel free to fork my repository and send me some pull requests