add repository link to template_boot
play with reverse generation
add a default_unit emmitter
factor amt() and format default_unit better
move amt() into Simple
add a prerequisite to Build.PL
[bug] jcalc to use emitter
[fix] amt() handles nic carrier
base = base_mg+base_carrier, nic=base+mg
add base,mg to bin/*
changes and new features oh my

 - defaults from config files and/or environment variables
 - replace 'nic' with 'base' and 'mg' to separate concerns
 - new 'unit' emitter that outputs a recipe from a recipe
 - add 'amt' to create recipes from amounts instead of fractions...
     amt 'flav' => 10;
     amt 'nic' => 20, mg => 100;
     amt 'vg' => 30;
     amt 'pg' => 40;
     -->
     flav 'flav' => .1;
     base 100, pg => 1;
     mg 20;
     fill vg => .3, pg => 1;