GToTree prepackaged single-copy gene HMMs

SCG HMM datasets from the initial publication of GToTree, based on NCBI, updated with modified "Universal" set from the initial GToTree release thanks to notes from Molly Chen - PF00181 ("Ribosomal_L2") was changed to PF03947 ("Ribosomal_L2_C") - the C-terminal (which PF03947 covers) is better conserved - PF00827 ("Ribosomal_L15") was changed to PF00828 ("Ribosomal_L27A") - PF00827 was archaea/euk only, PF00828 holds the bac/arc L15 also - PF17135 ("Ribosomal_L18") was changed to PF00861 ("Ribosomal_L18p") - PF00861 is better conserved For general process, see: https://github.com/AstrobioMike/GToTree/wiki/SCG-sets