alt_g2ctl v1.0.7a   6/2020 1 character correction for lambert conformal
alt_g2ctl v1.0.7    11/2018 added -match and -not, options cannot have trailing characters
alt_g2ctl v1.0.5    11/2018 added hybrid pressure layers (hply)
alt_g2ctl v1.0.4    10/2018 added hybrid pressure levels (hyp)
alt_g2ctl v1.0.3    2/2018 tdef+dir fix: J. Lehtiranta helped
alt_g2ctl v1.0.2    1/2018 for -sig, $profile=reverse to fix cross-section
alt_g2ctl v1.0.1    1/2018 replace -short that got lost
alt_g2ctl v1.0.0    12/2018 some restrictions on templating removed, added more template options
alt_g2ctl v0.9.99999  8/2017 fixed -short, removed spaces in name prior to renaming
alt_g2ctl v0.9.9999  5/2017 add -short
alt_g2ctl v0.9.999  4/2016 %f2 matches 2..8 digits %f3 matches 3..8 digits
alt_g2ctl v0.9.98   many changes, last is rotated lat-lon grid, percentiles
alt_g2ctl v0.5.5    03/2014 fix xdef/ydef when NPS/SPS has pole in grid
alt_g2ctl v0.5.3    11/2013 fix vertical profile: iso
alt_g2ctl v0.5.2    11/2013 fix vertical profile: sort
alt_g2ctl v0.5.1    11/2013 tr /\./d/d -> tr /\./d/
alt_g2ctl v0.5    10/2013 added -nthreads to alt_g2ctl and alt_gmp, -proc will be removed in future
alt_g2ctl v0.3    3/2013 %f2 and %f3 have undefined widths .. cannot use sort() 

alt_gmp   v0.3    3/2013 added %f3, allow %f2 and %f3 to expand to 5 digits
alt_gmp   v0.4    2/2014 update for no options mode
alt_gmp   v0.7    11/2018 added hybrid pressure layers (hply)  %s-%s hybrid pressure level
                    $2 == $1 + 1
alt_gmp   v0.0.9  9/2023 remove warning added by hybrid pressure level modification
alt_g2ctl v1.0.8  12/2021 updated help screen, added -hyp , -hply