simva 0.0

Changes in development version

Changes in 0.0.3

Add metabolism support. Second decimal place doesn't completely match the data in Cowles 1973.
Add pulmonary shunt support.
Add partial_pressures helper function.
Rename tissue_coefficients to partition_coefficients.

Changes in 0.0.2

Add humidification.
Add concentration effect.

Changes in 0.0.1

Initial version.