Feature-complete version of the new drfit package that can make use

of the drc package in order to obtain confidence intervals for EDx values.

See ChangeLog for details.



git-svn-id: http://kriemhild.uft.uni-bremen.de/svn/drfit@98 d1b72e20-2ee0-0310-a1c4-ad5adbbefcdc

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+2014-02-25  Johannes Ranke
+
+	* DESCRIPTION, NAMESPACE: New verson 0.6.1, with the drc package as
+	dependency. Import needed functionality to avoid masking standard functions.
+
+	* R/drcfit.R: Add function drcfit() that imitates the functionality of
+	drfit(), but internally uses the methods supplied by the drc package
+
+	* R/{drfit,drcfit}.R: Return the list of fitted models in an attribute of
+	the resulting dataframe
+
+	* R/drfit.R: Use the fitted nls() models directly to calculate EDx values
+
+	* R/drplot.R: Use different point characters (pch) for the data, and add the 
+	possibility to specify them using the argument pchs. Also make drplot() work
+	for the results from the drcfit function.
+
+	* man/drcfit.Rd: Document the above
+
+	* tests/drcfit.R: Add some tests for this new functionality
+
+	* man/{antifoul,IM1xIPC81,IM1xVibrio}.Rd: Add more example code including
+	the use of drcfit().
+
 2014-02-03  Johannes Ranke
 
 	* DESCRIPTION: New version 0.5-97 (leading zeros in version numbers are