elifecleaner 0.79.0

Support converting multiple <inline-graphic> tags in a single p tag into multiple <inline-formula> tags.

Modified: equation.disp_formula_tag_index_groups() to detect and increment inline-graphic tags found
Modified: equation.inline_formula_tag_index_groups() to detect and increment inline-graphic tags found
Modified: equation.transform_inline_formulas() to process tags in normal order and not reversed order

Code merged in PR #189