- initial submission of package lethal
- completly rewritten confint.LD function (especially regarding the output)
- newdata can now also handle small doses (range of dose < 50)
- new methods added
- lots of minor changes and bugfixes
- fixed bug in make_newdata (could erroneously drop to a vector in some cases)
- fixed problem in confint.LD when max(dose) <= LD
  (additional thoughts for CIs are still needed)
- care for missing data 
  ("hotfix")
- reduce data set returned by predict.LD if experiment != NULL
- added get_x for LDpred objects
- exported more functions
- plot functions added (but not exportet and documented yet)
- bugfix in confint.LD (dose and outcome were wrong)
- improved / corrected graphics
- minor changes
- added data set and examples
- increased version to 0.6
- allow more than two groups
- fixed names of confint results which went missing
- changed manual to reflect that we now can handle more than two groups