v4.5.1

Moved dendropy to 4.4, needed for newer pythons

license added.

Only added a license.

White space

4.3.6

4.3.6: check blanks

Debugging and two step execution feature

This corresponds to version 4.3.5 of SEPP.

SILVA reference added

This version has a SILVA reference tree added as well.

Make reference adjustable

Stefan's code for making reference tree and alignments adjustable in the run-sepp.sh file

Memory issues fixed

This release dramatically reduces the memory requirements at the expense of increasing the temp disk space and somewhat more frequent I/Os. Note that the behavior can always be controlled by changing piped under hmmsearch in the configuration file.