2014-02-03  Johannes Ranke

	* DESCRIPTION: New version 0.5-97 (leading zeros in version numbers are
	deprecated), modernize author field, enable lazy loading

	* Add this ChangeLog, a GNUMakefile, and an .Rbuildignore file

	* R/*.R: Clean out unnecessary calls to library() and require()

	* R/*.R: Tell R (>2.15.1) about some undeclared global variables to avoid NOTES in
	package checks

	* R/drfit.R: Add the argument showED50. If set to TRUE, drfit includes the
	ED50 and its confidence interval on the original scale in the output

	* R/drfit.R: Add the possibility to calculate several EDx values for each
	dose-response model

	* man/drfit.Rd: Update the documentation and use the new optional arguments
	in the example