remove unused function
reworked a check for being inside the par space

to account for rounding errors
Merge branch 'master' into develop
Merge branch 'fix_issue_2' into develop
add debug output
fix rounding for lower boundary too
fix issue #2
remove debug output
update DESCRIPTION and vignettes
fix a bug with one parameter models
Update date
minor corrections to howtos
Release candidate 2 for v2.2