v2.2.4

Fixed

• ensure a CORS request is made to fetch dynamic attribution for Esri basemaps instead of a JSONP request. (🙏jubasse🙏 #1142)
• make sure webpack clients can access the ES source. #1134)
• ensure basemapLayer honors a proxy if one is set. (🙏dangowans🙏 #1122)
• resolve devDependency security vulnerabilities (🙏gavinr🙏 #1126)