add return type to get sorted feature

dist/olHelpers/SortedFeatures.d.ts

dist/olHelpers/SortedFeatures.js.map

src/olHelpers/SortedFeatures.ts

test/serve/js/animate.js

test/serve/js/animate.js.map

test/serve/js/another.js.map

test/serve/js/compare-test.js

test/serve/js/compare-test.js.map

test/serve/js/itsMap.js

test/serve/js/itsMap.js.map

test/serve/js/my_little_test.js.map

test/serve/js/range_media.js.map

test/serve/js/reacttst.js.map

test/serve/js/simple_map.js

test/serve/js/simple_map.js.map

test/serve/js/slider-test.js.map