Fixes

• Fallback for location.origin. This might allow single-spa to work in IE10, but is not guaranteed. IE10 is not officially supported. (#789 via @gongshun)
• fix: incorrect module reference path. This may help with some UMD usages (#800 @godky)

Maintenance

• Add sponsors section to Readme (#797)
• Bump y18n from 4.0.0 to 4.0.1 (#763)
• Bump lodash from 4.17.19 to 4.17.21 (#798)
• Bump hosted-git-info from 2.8.5 to 2.8.9 (#799)