- update to 2.9:
* RescanDatabaseOnSave configuration option wasn't being read from the
configuration file resulting in the feature always being enabled
* Hourly graph image output using large fonts didn't correctly fade out
the x-axis line for hours not having data available
* Add --alert for producing output and/or specific exit status when
configured condition and transfer limit is exceeded, can also be used
for "quota remaining" type of queries depending on used parameters
* Add configuration option InterfaceMatchMethod which allows configuring
the possibility of specifying an interface for database queries by using
its alias instead of system provided interface name, enabled by default
to support case insensitive matching of the beginning of interface
aliases (vnstat and vnstati)
* Image output file extension allows selecting the used image file format
as long as the used LibGD supports it, PNG is no longer the only option
* Add configuration option HourlyGraphMode for changing the output mode
of the graph, 0 = 24 hour sliding window (default, as in previous
releases), 1 = graph begins from midnight
* Add mode parameter for -hg / --hoursgraph options for overriding the
HourlyGraphMode configuration option setting from the command line
* Add vertical line to image output hourly graph to visualize midnight
* Add -t / --timestamp options to daemon for enabling timestamps to prints
when the daemon is running in the foreground attached to a terminal
* Accept ; as comment character in configuration file in addition to #
* Comment out keywords which are using default values with ; character in
provided configuration file and --showconfig output