HZ90 module

added HZ90 module for setting composition. Needs variable definitions
and testing.
smooth HZ90 composition

put in HZ90 composition, with interpolation at composition jumps.  Need
to change index to pressure, and then use rootfind to get densities.
neutrons in abundances

neutrons now included in composition vector
density rootfind for HZ90

added routines to find density of HZ90 composition
density rootfind works!

We now have dense table of HZ90 composition… ready for TOV and then
crust table. whoo-hoo!
dStar_crust module

analogous to atmosphere module, the routines to make a crust table (EOS
and composition information) go into a library, dStar_crust
interface for dStar_crust

routines brought over from atm library.
modules for generating crust table

at least, enough info for TOV. Composition information
can be loaded as needed.
crust library ready for first testing

added wrapper to get the composition
test, P-rho relation

table generation, interpolation appears to work. during generation, a
ton of warnings about quantum effects generated.  would be good to have
option to turn off warnings…
composition test

routines to get composition for a vector of lgP.
option to turn off dos warnings

the only one is the ion quantum effects
table range

adjust table range so max density is about 0.15 fm.
test scripts for dStar_crust

added installation scripts and cleaned up test output
Merge branch 'development'