qicharts 0.3.2
=================
* Fixed handling of missing data in prime charts.
* primed argument in qic() function is deprecated, use prime instead.
* Minor adjustments to plot margins.
* New argument, agg.fun, in qic() function. Specifies the aggregate function if there is more than one value per subgroup.

qicharts 0.3.1
=================
* Fixed undefined globals in package

qicharts 0.3.0
=================
* New argument, sub, in qic() function. Prints a subtitle at lower left corner.
* New function, plot.qic(), plots a qic object.
* qic() now returns a list object of class 'qic' for plotting with plot.qic().
* prnt argument in qic() function will be deprecated, use print.out instead.
* New vignette "controlcharts".
* Vignette "runcharts" updated.

qicharts 0.2.0
=================
* Added nint argument to qic() function control the number of tick marks on the x axis.
* Fixed target argument of qic() function to obey multiply argument.
* cl argument of qic() function now takes a vector of length either one or the number of subgroups (for variable centre line in run charts).
* Minor code clean-up.
* Added cex argument to trc() function to control dot size (thanks to John MacKintosh, @HighlandAnalyst).
* Added gap argument to trc() function to control spacing between panels.
* Added target argument to trc() function.
* Title of trellis run charts is now left justified and of normal font weight (thanks to Markus Gesmann, www.magesblog.com).
* Fixed a typo in graph output (usefull -> useful).
* Added two recent run chart references to help section and vignette.

qicharts 0.1.3
=================
* Improved graph design based on the principles of Stephen Few (perceptualedge.com).
* Added argument to produce I control charts in trc() function.
* Added argument 'primed' to the qic() function, correcting narrow control limits
  when using P or U charts on data involving very large sample sizes.
* Added argument 'standardised' to the qic() function. When using P, U or Xbar
  charts, this allows the plotting of data points in standard deviation units
  with control limits at -3 and 3 along with a centre line at zero.
* If so desired, P and U charts can be primed and standardised at the same time.
* Smart rounding (to at least two significant digits) is used by default for
  median labels in trc charts. The 'dec' argument still provides manual control
  if needed.
* Smart rounding is also the default for central line and control limit labels
  in qic charts. The 'decimals' argument allows manual control of decimal digits.

qicharts 0.1.2
=================
* Set control limits outside possible range to NA in T, P, U, and G charts.

qicharts 0.1.1
=================
* The trc() function now returns a lattice object.

* Added arguments to control printing character and colours in trc() function.

* Added dec argument to control the number of decimals on the label of
  the centre line in trc() function.

* The qic() function now plots the main curve on top of other lines in the plot.

* Fixed an error caused if data frame argument holds a data frame
  created with the group_by function from dplyr.

qicharts 0.1.0
=================
* First release.
