Multipolygon support prototype.
...
Fix polygon url generation.
Try to support https.
Https support is complicated.
.
Add slashes at the end of polygon urls
Still broken
Add RefresherCache
Trying to simplify polygon service with refresher cache.
Add tracing to polygon db.
Actually save values to cache in refresher.
Fix incorrect base type for problem handle.
More mess.
Fix equality for ContestHandles
Call sanitize on each refresh.
...
...
Trying to figure out cache refresh behavior.
Pretty print problem handles.