+ Split parse_html/__init__.py into __main__.py.
+
+ Adapt JSON storage to recent Mozilla export format.
+
+ Add ChangeLog.
+
+ Allow parameters in BKMK_* environment variables; for example,
+ BKMK_ROBOT=forking:subproc=urllib or
+ BKMK_STORAGE=json:filename=bookmarks_db.json.
+
+ Pass subproc parameter to the subprocess to allow different robots.