* arts-2-1-473

	* src/m_atmosphere.cc (z_fieldFromHSE): Downgraded missing-H2O-error to
	a warning (when no H2O tag setting h2o_vmr=0. of course.). Deviations
	between including and excluding H2O in tropical atmo are <30m for
	z<100km and <50m for z<1500km (so, H2O not that relevant at all :-O ).

	* src/[m_basic_types,methods].cc (Compare): Added Tensor3 capability.



git-svn-id: https://www.sat.ltu.se/svn/rt/arts/trunk@8151 aaf1aab0-4228-0410-ad68-8dceda47f409