update lib
lib: update pmelt, pvap
lib: use NaN values in fortran, add plot_f0.m script
add doc
add docs, combine some functions
vmcw: add pnm support
Merge branch 'master' of github:slazav/he3lib

Conflicts:
	lib/Makefile
he3lib: add octave interface
fix makefiles
add octave support
lib: phase + fermi functions
Merge branch 'master' of github:slazav/he3lib

Conflicts:
	hpd/vmcw_func.f
	lib/.gitignore
	lib/matlab/compile.m
lib: update
cleanup spin diffusion code
lib: do not use common block
lib: rewrite Y0 code
update
lib: fix global variables
delete unused octave filder; refrite mexfunc.c; add accurate yosida function
lib: add nu_b, other fixes