Added a call to round so that non-integer line thicknesses do not cause an error.
Added a call to round so that non-integer line thicknesses do not cause
an error.

onixie/mcclim,slyrus/mcclim,antifuchs/mcclim,antifuchs/mcclim,onixie/mcclim,swflint/McCLIM,onixie/mcclim,slyrus/mcclim,swflint/McCLIM,swflint/McCLIM