sanity checks
Merge branch 'release/v1.0' into develop

Conflicts:
	README.md
	sanity_checks/cv_compare.py
prepend relative path to module directory. This is needed when calling from other folders, as data files are specified with relative links
gitignore update
add data for oxygen, including ZPE from lit (doi 10.1063/1.2436891)
corrected N initialisation for gases; citation for O2 ZPE
Apply GPLv3; update README
Bug fix: correct Cv reporting in units other than kB
Merge branch 'release/1.1'

Conflicts:
	README.md