get cont. abund. matrix (as list) and ranges (as np)
make sure column ranges have min of 0 (for <0 when cont.)
make sure cont. matrix has no neg. numbers
convert cont. matrix to gap matrix
convey cont. gap to binary and run mb
rename sub_disc back to disc2
properly format output
add demo R file for discrete and cont char on a tree
change root to root.value
print cont. gap and abund. matrices.