- Allow the user to decide whether to ordinate the null matrices independent on the ordination of the empirical interaction matrix. Gives a bit more flexibility.
- Order the null matrices for Coherence, and allow option to order them for turnover calculation. Not ordering nulls for Coherence results in erroneous positive coherence.
- Do not ordinate the null matrices. This won't affect the results from fixed-fixed null.
- Implemented the original null model for turnover as outlined in Leibold and Mikkelson 2002. Previous versions used a more traditional null model approach than shifting species filled ranges across sites as a block. There are pros and cons to both methods, but now the user has a choice.