Revision history for Perl extension Linux::LVM.
0.01  Thu Apr  3 08:21:41 2003
        - original version; created by h2xs 1.22 with options
                -X -n Linux::LVM
0.11  Fri Apr  4 09:00:00 2003
        - First ready for prime time release.
0.12  Mon Apr  7 07:45:00 2003
        - Added get_pv_info to fetch physical volume information by physical volume name.
        - Added get_lv_info to fetch logical volume information by logical volume name.
        - Made the get_vg_information routine public.
        - Added some basic error checking.
0.13  Mon Apr 10 07:45:00 2003
        - Reworked some of the regular expressions.
        - Improved the source documentation.
        - Added some examples of how to use the module.
0.14  Wed Jul  2 02:54:14 CDT 2008
        - Fixed some logic errors to get it working a little better
        - Full rewrite underway
0.15  Wed Dec 21 09:01:00 CDT 2011
        - Look in both /sbin and /usr/sin for lvm binaries
        - Report snapshot allocated_to_snapshot, cow_table_size and cow_table_unit
        - Report mirrored_volumes
0.16  Web Feb  8 13:50:00 CDT 2012
        - added units() sub to set units used for pe_size, lv_size, etc
0.17  Web Nov  6 19:24:00 CDT 2013
        - Compatiblity with LVM2 2.02.89 and above displaying path as "LV Path" rather than "LV Name"