checks for suppressed tags before stripping them
sets missing aff to aff1 only if there is one aff
allows ftp links
strips named-content tags from article title
fixes fn type
fixes formula label
fixes figure captions
fixes multiple page ranges
updated fix_corresp to use strip_tags
updated fix_label to use strip_tags
consolidated fix_bold_caption and fix_fig_caption
changed fix_bold_heading to fix_sec_title
changed to fix_caption which ignores bold
fixes bold in three kinds of titles
fixes italic in three kinds of titles
removes punctuation after addr-line
renamed fix_corresp to fix_corresp_label
actives email in corresp
reverted to basic lxml parser without recovery
set parser to validate dtd