More realistic default value for page_cache_size
Shorten method names, fix PEP8
Adapt generic processors to logitems workflow, generalize flags
Fix typo in table name
Implement classes for all downloadable dump files
Method to check DB existence; adapt schema and PKI creation for revhist and logitem parsing coexistence
iterparse(...recover=True) prevents runtime errors due to malformed XML files; save contrib dict for logitem element; minor fixes in comments
Fix support for block actions; develop file storage and DB insertion methods; initiate support for detecting creation of new user accounts
Adapt ETL and Task classes for revhist and logitem parsing coexistence and independent execution
Parse & save new options for ETL:PagesLogging; Rename revhist section to ETL:RevHistory; Handle multiple main tools (tasks)