* arts-2-1-721

* src/linerecord.cc: Reading some quantum numbers for ClO and NO now.

* src/m_zeeman.cc: Preliminary compatibility with NO and ClO now. Not
tested yet. Any suggestions on how to test this? I could not find any 
models doing this.

* src/quantum.{h,cc}: Added QN_Omega.

* src/partition_function_data.cc, src/species_data.cc: Can now work with
HITRAN2012 based on the HITRAN ref-table.pdf. For isotopes already in 
these files, I only added the HITRAN tag number. For isotopes of already
existing molecules, I assumed Q(T) to by from the most abundant of the
species, the mass was calculated from the most common isotope with
integer addition for all extra mass. 

For new molecules, the atomic mass
as an integer of the isotopic parts was assumed, C4H2 was assumed linear
and SO3 assumed non-linear for the Q(T)={T,T^1.5}, and were thus given 
the corresponding degree of freedoms. HBr have 2 molecules with molecule
number "11" in the new HITRAN. The latter of these is now named 11_2 in
ARTS, whilst the first remains unchanged in name. 

The completely new isotopes are: HNO3-156, HBr-29, HBr-11_2, HI-27, 
N2-45, and COF2-369

The completely new species are C4H2, and SO3.

The isotopes new in HITRAN2012 number are: HCl-25, HCl-27, HF-29, H2-11,
and H2-12.

Some check-all tests will fail with this commit.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8575 aaf1aab0-4228-0410-ad68-8dceda47f409
	* arts-2-1-722

	* doc/uguide/refr_index_theory.tex: Added. Moved refractive index (models)
	theory/background parts	from AUG to here and merge info from
	ESA-Planetary TN1 into it. Currently an own chapter; in future rather
	make it a section in propagation paths chapter?

	* doc/uguide/refr_index.tex: Minor updates, corrections. Few parts moved
	to ATD.

	* doc/uguide/arts_theory.tex: Include the refractive index chapter.

	* doc/uguide/references.bib: Added newell65 as refractive index
	reference.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8578 aaf1aab0-4228-0410-ad68-8dceda47f409
2013-08-13  Patrick Eriksson  <patrick.eriksson@chalmers.se>

            * arts-2-1-723

            * src/ppath.cc (ppath_calc): Improved check if TOA reached. Added
            second part of if-statement. Required for some fatal cases where
            the start part otherwise can jump outside the atmosphere. This
            fixed one failing case provided by Ole Martin.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8581 aaf1aab0-4228-0410-ad68-8dceda47f409
2013-08-14  Patrick Eriksson  <patrick.eriksson@chalmers.se>

            * arts-2-1-724

            * src/ppath.cc (rslope_crossing2d): Changed dmin from 1e-12 to
            5e-12. A setting to handle numerical problems. Another case from
            Ole Martin required a dmin of 1.8e-12 to be handled. So increased
            dmin with some margin.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8582 aaf1aab0-4228-0410-ad68-8dceda47f409