2.6  Change meta.cum to cummeta, add cummeta.summaries, 
     Change x-axis tick calculation for log scales

2.5  Random effects meta-analyses weren't actually using the DerSimonian &
     Laird estimator but a different moment estimator.
     <NBarrowman@exchange.cheo.on.ca>

     Now uses the options() default for na.action

     Colours can be specified as a vector, which will be recycled.

2.4-1 bug in meta.cum (ripley@stats.ox.ac.uk)

2.4  Cumulative meta-analyses, changed n-1 to n in formula for tau in
     meta.DSL, allowed relative risk in addition to odds ratio.

2.3  CMD check fixes (thanks, Kurt)

2.1  Better color handling. 
     Funnel plots
     meta-analysis of non-binary data

2.0  User-specified confidence level (mostly from Ko-Kang Wang)
     Colors.