use appropriate comparisons
use appropriate comparisons

Fixes #1073. toBe, toEqual, toBeCloseTo... hopefully we're saying what
we really mean here

maackle/dc.js,aaronhoffman/dc.js,r4j4h/dc.js,mtraynham/dc.js,maackle/dc.js,r4j4h/dc.js,Hauenstein/dc.js,Hauenstein/dc.js,dc-js/dc.js,dc-js/dc.js,mtraynham/dc.js,Hauenstein/dc.js,aaronhoffman/dc.js,maackle/dc.js,becompany/dc.js,mtraynham/dc.js,r4j4h/dc.js,TheDataShed/dc.js,aaronhoffman/dc.js,mtraynham/dc.js,r4j4h/dc.js,maackle/dc.js,aaronhoffman/dc.js,ruhley/dc.js,maackle/dc.js,mtraynham/dc.js,r4j4h/dc.js,becompany/dc.js,ruhley/dc.js,Hauenstein/dc.js,TheDataShed/dc.js,aaronhoffman/dc.js,becompany/dc.js,TheDataShed/dc.js,ruhley/dc.js,TheDataShed/dc.js,dc-js/dc.js,dc-js/dc.js,ruhley/dc.js,TheDataShed/dc.js,dc-js/dc.js,Hauenstein/dc.js,ruhley/dc.js