move to json in functions
Rewrite from OSM XML + BeautifulSoup to JSON + lxml
Merge branch 'master' into json-merger
Fixes from master
Remove warning about deprecation
fixes for returning Etree XML
Look for WERSJA_DO as well as WAZNY_DO
do not set empty tags
remove unnecessary spaces
add new function - parallel map
few bugfixes, and support for parallel execution, though it doesnt deliver any improvements in performance
better repring addresses
added grouping of calls in separate loops, one per therad
lowered ignoring address messages loglevel
replace multiple spaces with one space
remove _changed property, now basing on status, added add_new method in osmdb
change state of building after merging address with it
 additional mappings
added import of sym_ul and simc but do not mark objects as changed (opprotunistic import). Mark both candidate building and address as visible during merge