latex2stog: ignore maketitle, bibliographystyle; handle footnote
change priority in env definition: local rules can override used modules
stog2latex: ensure creation of paragraph at the beginning of sections
stog2latex: handle imagesize directive, fix handling of section labels
stog2latex: fix: do not cut some code at the beginning of section when there is no label
stog2latex: fix (again) paragraph detection
use math:prop instead of math:proposition
stog2latex: minimal support for align environment
handle \% in normal text, and \<space> in math mode; handle \ldots
ignore small