ChangeLog

Include a way to call a newer version of sshfs to work in OS X Lion and greater.
Application no longer crashes when deleting a filesystem.
Ability to expand the mount path, for example: ~/filesystem to /Users/yoshiki/filesystem.
Modified the menu application to toggle between mount and un-mount filesystem.
Added a checkbox to add (or not) a mounted filesystem into Finder's sidebar.
Added the output of git rev-parse --short HEAD to the about window.

Installation

Remember that depending on the operating system you are using you will have to install any of the following dependencies:

X11, OSX 10.8 needs a manual installation of [XQuartz][]; it is very likely that you already have this installed in your computer if you are using 10.7 or lower.
For Mac OS X 10.6, you will need [MacFUSE][].
For Mac OS X 10.7 and greater, you need [Fuse for OSX][], note that you will need to check the "install MacFUSE compatibility layer" option during the installation process, otherwise some parts of the software will be broken.