feat: use named exports, export utils from main entry point

BREAKING CHANGE: There is no longer a default export, please update any imports as per the readme

readme.md

@@ -8,7 +8,6 @@
 [![Codecov branch](https://img.shields.io/codecov/c/github/DJTB/hatsuon/master.svg?style=flat-square)](https://codecov.io/github/DJTB/hatsuon)
 <br />
 [![Commitizen friendly](https://img.shields.io/badge/commitizen-friendly-brightgreen.svg?style=flat-square)](http://commitizen.github.io/cz-cli/)
-[![styled with prettier](https://img.shields.io/badge/styled_with-prettier-ff69b4.svg?style=flat-square)](https://github.com/prettier/prettier)
 [![Code of Conduct](https://img.shields.io/badge/code%20of-conduct-ff69b4.svg?style=flat-square)](./code_of_conduct.md)
 
 ## Why?
@@ -28,7 +27,7 @@ npm install --save hatsuon
 ## Usage
 
 ```js
-import hatsuon from 'hatsuon';
+import { hatsuon } from 'hatsuon';
 
 hatsuon({ reading: 'ちゅうがっこう', pitchNum: 3 });
 // =>
@@ -53,7 +52,7 @@ import {
   makePitchPattern,
   getPitchPatternName,
   getPitchNumFromPattern,
-} from 'hatsuon/dist/utils';
+} from 'hatsuon';
 ```
 
 ## Related

src/index.js

@@ -1,5 +1,14 @@
 import { getMorae, makePitchPattern, getPitchPatternName } from './utils';
 
+export {
+  isDigraph,
+  getMorae,
+  getMoraCount,
+  makePitchPattern,
+  getPitchPatternName,
+  getPitchNumFromPattern,
+} from './utils';
+
 /**
  * Returns pitch accent information for the provided word and pitch number
  *
@@ -8,8 +17,9 @@ import { getMorae, makePitchPattern, getPitchPatternName } from './utils';
  * @param {number} [pitchNum=-1] pitch number
  * @returns {object} pitch data
  */
-export default function hatsuon({ reading = '', pitchNum = -1, locale = 'JA' } = {}) {
+export function hatsuon({ reading = '', pitchNum = -1, locale = 'JA' } = {}) {
   const morae = getMorae(reading);
+
   return {
     reading,
     morae,

src/index.test.js

@@ -1,4 +1,4 @@
-import hatsuon from './index';
+import { hatsuon } from './index';
 
 describe('hatsuon()', () => {
   it('sane default', () =>
@@ -9,6 +9,7 @@ describe('hatsuon()', () => {
       pattern: [],
       patternName: '不詳',
     }));
+
   it('works', () => {
     expect(hatsuon({ reading: 'よみかた', pitchNum: 3 })).toEqual({
       reading: 'よみかた',
@@ -18,6 +19,7 @@ describe('hatsuon()', () => {
       patternName: '中高',
     });
   });
+
   it('accepts locale', () => {
     expect(hatsuon({ reading: 'とっきゅう', pitchNum: 0, locale: 'EN' })).toEqual({
       reading: 'とっきゅう',