Changes for version 3.0.1

FormKeyError was in the wrong place in the pse.conf file, and it didnt work anyway. It is now in the plugin.request section where it belongs.
PSE will no longer die if a custom tag import fails.
Session cookies now expire properly according to pse.conf.
api.write_error will no longer fail if a string was not passed.
psecompile will now successfully compile/copy symlinked directories.