Standardised filenames, modified includes and Makefile appropriately.
Added README.
Initial work on factorised input buffers.
Corrected location of static inlines, modified Makefile.depend to pull in common headers.
Switched ensemble over to using new input buffer components.
Pass (1-decay) to the model to (1) save computation, (2) limit effect of fixed-point errors.
Corrected silly mistake: failed to define ```n_filter```.
Neatened initialisation of input buffer.
Bringing branch into line.
Using factored filter input buffer.