Scale cirlces by lender loan count
Relevant indices for our query
Test for the median
Better comments
Fix lat/lon mixup in precaching code
Must change # of tiles in this range
Account for tracts with zero loans
Ignore zeros. Can't risk the midpoint being a zero
Need to include value list to avoid extra computation
Merge pull request #99 from cmc333333/precache-fix

Fix lat/lon mixup in precaching code
Merge pull request #98 from cmc333333/median-per-city

Scale circle size by median per lender (per metro, if appropriate)
Merge pull request #100 from cmc333333/limit-values

Need to include value list to avoid extra computation