mark - fixed unit setting
Merge branch 'master' into i238-icclim
mark - all tests working. added fillvalue back into icclim tests
Merge branch 'master' into i238-icclim
Merge branch 'master' into i238-icclim
Merge branch 'master' into i238-icclim
mark - changed inheritance to allow for multivariate
mark - got the constructor working
mark - all tests working with DTR
Merge branch 'i243-large-array' into i238-icclim
mark - added ETR calculation
mark - added TN and TX
mark - added JSON serialization for old attributes; tests working
mark - docstring
mark - minor changes to compute