First release

Last changes for first public version. Closes #11 (closed).

After merging:

1. Tag that merge commit.
2. Create a release and attach source and binary builds of the package.
3. Tell N. how to download the newest version and how to cite it. Or better: Just send him the package so that he uses the correct version before all that refactoring.
4. Merge into v2.0.

R/ecxsys.R

@@ -481,9 +481,6 @@ ecxsys <- function(concentration,
     # also be broken in two. The left part of the axis is supposed to be at
     # 0 but because it's a log axis I have to make the values just really
     # small. The concentrations in the gap won't be used for plotting later.
-
-    # TODO: Also return the LL.5-curves with and without env.
-
     n_smooth <- 1000  #  number of points to approximate the curves
     concentration_smooth <- 10 ^ seq(
         log10(min_conc * conc_adjust_factor),