barcharts.py: added minDimen property to allow customization of zero height bars
barcharts.py: added minDimen property to allow customization of zero height bars

Distrotech/reportlab,kanarelo/reportlab,kanarelo/reportlab,kanarelo/reportlab,kanarelo/reportlab,kanarelo/reportlab,Distrotech/reportlab,Distrotech/reportlab,Distrotech/reportlab,Distrotech/reportlab