output core alignment header file in EMBL format

update version

add roary2svg script

make R plots names consistent

fix tests for accessory fasta

Merge pull request sanger-pathogens#209 from andrewjpage/improved_too…

…l_checking

Improved dependancy checking

use correct variable

add optional dependancy from file slurper to stop warnings

remove path from accessory tree

increase memory for core alignments