* arts-2-1-446

	* src/abs_species_tags.{h,cc}
	(SpeciesTag): Removed member mzeeman, instead added member mtype,
	which can be TYPE_PLAIN, TYPE_ZEEMAN, TYPE_PREDEF, TYPE_CIA. Added
	also public member function Type() for this and removed public
	member function Zeeman(). Adapted member functions to this change.
	(is_zeeman): Added this function for ArrayOfSpeciesTag, which can
	be used if a tag group is a Zeeman group. This has to be checked
	for the whole group, not just for the first tag, since the Zeeman
	tags could be in the middle. They could be mixed with continuum
	tags (but not with normal line-by-line tags.)

	* src/absorption.cc: Cosmetics.

	* src/m_abs.cc (abs_xsec_per_speciesAddLines): Adapted to new
	is_zeeman function.
	(abs_xsec_per_speciesAddConts): Adapted to new SpeciesTag::Type() function.

	* src/m_abs_lookup.cc (abs_lookupCalc): Adapted to new
	is_zeeman function.

	* src/m_zeeman.cc (abs_mat_per_speciesAddZeeman): Adapted to new
	is_zeeman function.

	* controlfiles/artscomponents/cia: Added. For CIA testing.

	* controlfiles/artscomponents/cia/TestCIA.arts: Added.

	* controlfiles/artscomponents/cia/README.txt: Added.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8116 aaf1aab0-4228-0410-ad68-8dceda47f409
	* arts-2-1-447

        * src/cia.{h,cc}
	(CIARecord::Species): Added this function, which returns the
	contents of mspecies.
	(CIARecord::Extract): Started on implementation of this, but
	realized that guessing the right dataset is too difficult, we have
	to make this a user choice.
	(CIARecord::ReadFromCIA): Now converts the binary absorption
	cross-sections to ARTS SI units.

        * src/m_cia.cc
	(abs_xsec_per_speciesAddCIA): Implemented this.
	(abs_cia_dataReadFromCIA): To decide whether this is a CIA
	species, Use SpeciesTag.Type() function instead
	of SpeciesTag.Cia()

        * src/methods.cc (abs_cia_dataReadFromCIA): Added built-in
	documentation on units.

        * src/workspace.cc (abs_cia_data): Revised built-in
	documentation.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8117 aaf1aab0-4228-0410-ad68-8dceda47f409