Merge branch 'master' into chore/linter

# Conflicts:
#	lib/contracts/contribution.js
#	lib/contracts/contributor.js
#	lib/contracts/proposal.js
#	lib/kredits.js
#	lib/serializers/contributor.js
#	yarn.lock

lib/utils/format-kredits.js

@@ -0,0 +1,10 @@
+const ethersUtils = require('ethers').utils;
+
+module.exports = function (value, options = {}) {
+  let etherValue = ethersUtils.formatEther(value);
+  if (options.asFloat) {
+    return parseFloat(etherValue);
+  } else {
+    return parseInt(etherValue);
+  }
+}

lib/utils/pagination.js

@@ -0,0 +1,46 @@
+function pageNumber(number, size, recordCount) {
+  let numberOfPages = Math.ceil(recordCount / size);
+
+  number = parseInt(number) || 1;
+
+  // Ensure page number is in range
+  number = number < 1 ? 1 : number;
+  number = number > numberOfPages ? numberOfPages : number;
+
+  return number;
+}
+
+function buildIds(order, number, size, recordCount) {
+  let offset = size * (number - 1);
+
+  let start;
+  let mapFunction;
+
+  if (order === 'asc') {
+    start = 1 + offset;
+    mapFunction = (_, i) => start + i;
+  } else {
+    start = recordCount - offset;
+    mapFunction = (_, i) => start - i;
+  }
+
+  // Ensure size is in range
+  let end = offset + size;
+  if (end > recordCount) {
+    let diff = end - recordCount;
+    size = size - diff;
+  }
+
+  return Array.from({ length: size }, mapFunction);
+}
+
+module.exports = function paged(recordCount, options = {}) {
+  let { order, page } = options;
+  order = order || 'desc';
+  page = page || {};
+
+  let size = parseInt(page.size) || 25;
+  let number = pageNumber(page.number, size, recordCount);
+
+  return buildIds(order, number, size, recordCount);
+};