3.4.0b1

• Galactic plane fix for d9, d10, d11 #111
• Documentation about the processing of GNILC dust input templates #97 spectral index and dust temperature #104
• Planck GNILC based templates d9, d10, d11 #108
• CO Lines models co1, co2, co3 #86
• 3D MKD Dust model with 6 layers d12 #87