Moving options that will be common to all microphysics from lgrngn subparser into the main one. Closes #6.
making cloud-droplet range boudaries an option. Solves partially the issue #5
fixing cloud_r_min option handling (so it does something at all!)
moving instatiation of output from parcel.py to drops.py (as drops.py knows which scheme we use, but parcel.py does not need to know it)
adding spec_cld output (both text files and hdf)
Increasing number of dignificant digits in sounding.txt for theta. Closes #14.
Merge branch 'issue_6'
Merge branch 'issue_13'
Merge branch 'issue_14'