major bug fix - parinfolist did not preserve order of parameters, leading to incorrect multi-peak nh3 fits
**WHY DOES PEP 3201 NOT ALLOW (self, *args, keyword=keyword) ? **
merge.  I hate merges without conflicts, but this is one of them.
travis - added tkinter install
added APEX reader to read_class.  It's a hack, empirically derived, as I have NO idea why the class data structure is how it is
(but I suspect they just keep adding on new "header regions" and I don't know how to detect them)
added formaldehyde mm fitter template (incomplete / nonfunctional)
success!  formaldehyde_mm fitter works!  WHOA.
added ability to plot models with specified parameters (instead of fitted parameters)
still somewhat incomplete
formaldehyde_mm test
plotkwargs fixing.  Can't have kwargs getting passed around all willy-nilly.  sigh.
merge
added some info about requirements to the install page
doc update (apparently)
added multivoigt example
tried to improve parinfo's robustness so that someone could actually consider making their own parinfo struct
Added tag pyspeckit_0.1.12 for changeset e434f1fc3e07
updated INSTALL.txt with pip instructions
added REQUIREMENTS to MANIFEST.in to allow installation from pip
minor updates to an h2co test
Added tag pyspeckit_0.1.12 for changeset 4de0a5a96867
updated version number
added sn2009ip_halpha data
added a missing figure, rebuilt docs
added another missing image
updated .travis.yml to install a matplotlib backend