z values in recfast derived in more robust way, avoiding compiler-dependent rounding issues
q smapling robust in range -0.5+0.5, and omegak now limited to this range
get warning if pass file which is neither .ini nor .pre
fixed bug appearing when tau_d is very small and z_d is above 10000
corrected bug in print_variables: was printed only in last approx interval
when printing perturbation evolution, print also a
fixed bug in clauclation of z_d
always write a # in headers
Update the model of Halofit used to match that of arXiv:1208.2701, which
works better on small scales and incorporates a correction for dark
energy.

Also update the massive neutrino fitting formula parameters so they work
atop of the above modified halofit. These parameters have been generated
using the same procedure as in arXiv:1109.4416 and give similar results,
but assume the newer halofit.
changed comment for halofit
fixed case r=0, and removed useless lines in background
removed obsolete warning for tensor polarisation
can ask for lensed polarisation without temperature
updated version number to 2.1.2
Removed few bugs pointed out in Munich workshop, most important was error in baryon drag redshift introduced in 2.1.0

* devel:
  updated version number to 2.1.2
  can ask for lensed polarisation without temperature
  removed obsolete warning for tensor polarisation
  fixed case r=0, and removed useless lines in background
  changed comment for halofit
  Update the model of Halofit used to match that of arXiv:1208.2701, which works better on small scales and incorporates a correction for dark energy.
  always write a # in headers
  fixed bug in clauclation of z_d
  when printing perturbation evolution, print also a
  corrected bug in print_variables: was printed only in last approx interval
  fixed bug appearing when tau_d is very small and z_d is above 10000
  get warning if pass file which is neither .ini nor .pre
  q smapling robust in range -0.5+0.5, and omegak now limited to this range
  z values in recfast derived in more robust way, avoiding compiler-dependent rounding issues