refactored (od)logit fitting code
more refactoring
more changes to use smaller functions
removed some invalid rows from data; updated code to fit standard regression models
small tweaks; need to repair plotcat
got robit fitting working
added files to track
undid too much add
untracked bad file
added function to process BIC-related vars
aic/bic calcs working for conventional fits
got DIC calcs up and running
squashed bug in runjags_ppv
added additional model files; modded runjags accordingly
added more models
fixed .bug comments, added dic files
edits to rectify conventional fit plotting

-make_conventional fits now works
-ppv_fitting now orders conventional fits by date
-removed redundancy from make_figure_sessfit
modded overdisp analysis to make self-contained
added file to plot curve widths over time
modded README, annotated model specs in runjags