v3.0.1 Diamond

• adds May 1 launch banner (7c40cf2 & 049492b)
• fixes y2 plot styling (509ad06)
• allows keyboard to scroll search result list (65b8712)
• fixes search keyboard highlighting (34e9d82)
• adds catch for malformed topic URLs (5e0f0e2)
• fixes similar logic leak with invalid profile slug (a13cdd5)
• fixes leaks with error-cached geoservice APIs (99dc8f6)
• fixes spelling error on API page (d048eda)
• updates README (fc9659c)