prevent unintentinoal overwriting of parinfo attributes
Merge branch 'measurements_refactor'
new formaldehyde/hyperfine modeling tools and continuum fitting in
SpectralCube's fiteach
a series of major whitespace cleanups and a serious bugfix in
spectralcube regarding how errors were assigned.  also added tbackground
to hyperfine / formaldehyde modeling
fixed unit writability
check that guesses are finite in fiteach
bugfix in units: if xarr is not writable, copy itself.  Otherwise,
spacing changes and a minor bugfix / extra check for existence when
creating fit legend
minor refactor in fitters to remove duplicate and broadly incorrect code
added the fixed units to CHANGES
cube integ bugfix for odd dims
Merge branch 'master' of github.com:pyspeckit/pyspeckit