check_cross: check that markers are ordered in gmap and pmap
A few small changes to the developer guide
Further small changes to the developer guide
Small changes to the input files vignette
read_cross2: More general treatment of linemap and cross_info in the control file
developer guide: change an "is" to "are"
input files vignette: a bunch of text spelling out the details of input file format; needs editing
read_cross2: fix bug for case cross_info is missing from control file
test of check_cross2: avoid re-reading the zip files
C++ code: use & for args in hmm code, though it doesn't seem to help with speed
est_map: add a line to avoid magrittr-related warning in R CMD check