xfwm is the window manager for Xfce
See NEWS for details on changes and fixes made in the current release.
From source:
% cd xfwm4
% ./autogen.sh
% make
% make install
From release tarball:
% tar xf xfwm4-<version>.tar.bz2
% cd xfwm4-<version>
% ./configure
% make
% make install
Visit the reporting bugs page to view currently open bug reports and instructions on reporting new bugs or submitting bugfixes.