added Sequence class, tests
add_gene and remove_gene for Sequence
fasta reader ready to roll, console controller starting to adapt to new hierarchy
more progress on console_controller
more methods in controller
one step closer to removing genome class
no more genome dependencies in console controller
console command working ... except for writetbl and invalidateregion
removed genome import from console controller
console controller no longer directly touches genes, except ducttape stuff which needs a makeover anyway.
added informative messages to console controller's load_folder method
fixed error in sequence.extract_cds; more status messages in consolecontroller.loadfolder
shell of gene.to_tbl
mrna.to_tbl added. nothing much to it, though.
added arg to cds/exon.to_tbl()
seq now adds first two lines of tbl entry
Added return empty string to end of Sequence.get_locus_tag()
Beginnings of Sequence.stats()
seq stats num_genes and num_mRNAs
seq stats num_CDS