Add atom/rss/json feeds

config/filters/index.js

@@ -1,11 +1,12 @@
 const dateFilters = require('./dates');
 const arrayFilters = require('./arrays');
 const excerptFilter = require('./excerpt');
-
+const filterBy = require('./filterBy')
 module.exports = function(eleventyConfig) {
     eleventyConfig.addPlugin(dateFilters);
     eleventyConfig.addPlugin(arrayFilters);
     eleventyConfig.addPlugin(excerptFilter);
+    eleventyConfig.addPlugin(filterBy);
 
     eleventyConfig.addFilter('keys', obj => Object.keys(obj))
     eleventyConfig.addFilter('json', obj => JSON.stringify(obj, null, 2));