06/11/2022 - 0.67

   - Update php to 8.0. We include a polyfill for one function if
     running under 7.4.

   - Allow . in interface names for vlans (Damien Degois)

   - Update README and install_rrdtool.sh.

16/04/2014 - 0.66

   - Add rrdtool required fonts to install_rrdtool.sh (Jyry Suuntala)

   - Sort host list in index.php (Fabio Pardi)

   - Allow capitals in process names. (Stuart Henderson)

   - Only list .layout files if we have read permissions. (Stuart Henderson)

   - Add config variable layout_first: makes showing layout files first instead
     of hosts selectable. (Stuart Henderson)

   - Added metric class; export rrdtool data as json metrics.

05/09/2012 - 0.65

   - Allow '-' in rrd filenames.

16/02/2012 - 0.64

   - Added graph pfs for pf states; ln -s pf.rrd pfs.rrd for them to show up in
     your graphs.

   - mem reported 'b' for bit instead of 'B' for byte

23/03/2011 - 0.63

   - Removed complicated io/iops/df/smart id parsing to allow linux style
     /dev/disk/by-*/* labels

   - Added a config option that translates "ata-manufacturer_model_serial" into
     "serial"

05/03/2011 - 0.62

   - Alpha calculation for single cpus in cpu(iow) graphs was off by one
     (Stuart Henderson)

04/03/2011 - 0.61

   - Added graph load (Tim Kuijsten)

   - Added graph for flukso probe

14/06/2010 - 0.60

   - Insert abs() around % usage; php % operator uses sign of the
     divident (Yeb Havinga)

   - class_cache.inc tried to be smart by double checking cached files
     found. This made it fail when many requests are served concurrently
     and some files had disappeared the second time it looked.

   - Cpu/cpuiow graphs can now also autocombine many cpus into one graph.

   - All combined graphs will now show their constituents when clicked.

23/11/2009 - 0.59

   - Added more cpus to graph_defaults.ini for hosts with more than 4
     cpus (Walter Russo)

   - Added smart graphs

06/04/2008 - 0.58

   - Added noui index.php for ppl that want to display graphs or their
     particular layout without logos and copyright fuzz. (Yeb Havinga)

   - Added combined graph for df which shows free blocks/bytes for all drives
     combined.

   - Added graph iops; ln -s io_x.rrd iops_x.rrd for them to show up in your
     graphs. There is also a combined variant.

   - Added cpuiow (Yeb Havinga)

   - Graph labels and comments are auto justified

   - Added more color swatches for combined graphs

06/01/2008 - 0.57

   - Extended regexp in class_graph to allow multiple _ in df names

09/09/2007 - 0.56

   - Extended regexp in class_graph to match proc names with '-' (Ulrich
     Spörlein)

   - Rewrote regexps into several statements to ease maintainability

20/12/2006 - 0.55

   - $symon['isolate_hosts'] in setup.inc generates default host layouts for
     all hosts

   - Holop Ferenc's alternate index.php is now the default one

   - Sensor template regexp in class_graph now matches correctly

25/06/2006 - 0.54

   - install_rrdtool.sh deals with new ldd layout in OpenBSD 3.9

21/09/2005 - 0.53

   - Df layout contributed by Marc Winiger. setup.inc has a new configuration
     option to select whether the df graphs should show bytes or 512 byte
     blocks.

07/07/2005 - 0.52

   - Pfq and io files can now be combined into single graphs

   - Class names are no longer lowercase in php5 (first reported by Steven
     Stremciuc)

   - Allow if_vlan999.rrd (Stuart Henderson)

   - Gaby Vanhegan contributed even more layouts

16/02/2005 - 0.51

   - configtest.php can accept other layouts using ?layout=

   - Cpu[123].rrd is now recognised (Tiago Andre Cunha)

04/02/2005 - 0.5

   - Pf.layout now also shows daily averages (Gaby Vanhegan)

   - Unrecognised rrdfiles are not graphed (use configtest.php for debugging)

   - Php open tags (Holop Ferenc)

   - Alternate index1.php (Holop Ferenc)

   - Default layout is now sorted alphabetically (Jan Sipke
     van der Veen)

   - Port changes (Nikolay Sturm)

   - Proc rrd files may now contain dots

26/02/2004 - 0.4

   - Added graph for new io and tidied the layouts

   - Added syweb port

   - Graph and layout do not work for graphs with numeric ids above 9
     (Stephan Tesch)

   - Removed typos (Franciszek Holop)

23/11/2003 - 0.3

   - Added mbuf and sensor graphs

   - Proc graph has a better display

   - Layout now complains about rrds in host_tree root
