updates to change log

add GO alt ids
removed SDIS and SCHEM resolution of lost values (values should not change)
limited entrez, hgnc, mgi, rgd change log to lost values
added parsing of RGD obsolete genes file
updated formating of change_log fo lost swiss Prot accession #s
changed to assign 'withdrawn' only to values noted to be obsolete/withdrawn by nomenclature authority

closes #21
closes #22
closes #20
closes #19
closes #17
closes #16
closes #5