diff --git a/ghu.js b/ghu.js
deleted file mode 100644
index 89477515..00000000
--- a/ghu.js
+++ /dev/null
@@ -1,157 +0,0 @@
-const {resolve, join} = require('path');
-const {
-    ghu, autoprefixer, cssmin, each, ife, includeit, jszip, less, mapfn,
-    pug, read, remove, run, uglify, watch, webpack, wrap, write
-} = require('ghu');
-
-const ROOT = resolve(__dirname);
-const SRC = join(ROOT, 'src');
-const TEST = join(ROOT, 'test');
-const BUILD = join(ROOT, 'build');
-
-const mapper = mapfn.p(SRC, BUILD).s('.less', '.css').s('.pug', '');
-const WEBPACK_CFG = {
-    mode: 'none',
-    module: {
-        rules: [
-            {
-                test: /\.js$/,
-                use: {
-                    loader: 'babel-loader',
-                    options: {
-                        presets: ['@babel/preset-env']
-                    }
-                }
-            },
-            {
-                test: /jsdom/,
-                use: 'null-loader'
-            }
-        ]
-    }
-};
-
-ghu.defaults('release');
-
-ghu.before(runtime => {
-    runtime.pkg = Object.assign({}, require('./package.json'));
-
-    const res = run.sync(`git rev-list v${runtime.pkg.version}..HEAD`, {silent: true});
-    if (res.code === 0) {
-        const hashes = res.stdout.split(/\r?\n/).filter(x => x);
-        if (hashes.length) {
-            const counter = ('000' + hashes.length).substr(-3);
-            const hash = hashes[0].substr(0, 7);
-            runtime.pkg.version += `+${counter}~${hash}`;
-        }
-    }
-
-    runtime.comment = `${runtime.pkg.name} v${runtime.pkg.version} - ${runtime.pkg.homepage}`;
-    runtime.comment_js = `/* ${runtime.comment} */\n`;
-    runtime.comment_html = `<!-- ${runtime.comment} -->`;
-    console.log(runtime.comment);
-});
-
-ghu.task('force-production', 'ensure :production flag is set', runtime => {
-    if (!runtime.args.production) {
-        runtime.args.production = true;
-        console.log('forcing production mode');
-    }
-});
-
-ghu.task('clean', 'delete build folder', () => {
-    return remove(BUILD);
-});
-
-ghu.task('build:scripts', runtime => {
-    return read(`${SRC}/_h5ai/public/js/scripts.js`)
-        .then(webpack(WEBPACK_CFG))
-        .then(wrap('\n\n// @include "pre.js"\n\n'))
-        .then(includeit())
-        .then(ife(() => runtime.args.production, uglify()))
-        .then(wrap(runtime.comment_js))
-        .then(write(mapper, {overwrite: true}));
-});
-
-ghu.task('build:styles', runtime => {
-    return read(`${SRC}/_h5ai/public/css/*.less`)
-        .then(includeit())
-        .then(less())
-        .then(autoprefixer())
-        .then(ife(() => runtime.args.production, cssmin()))
-        .then(wrap(runtime.comment_js))
-        .then(write(mapper, {overwrite: true}));
-});
-
-ghu.task('build:pages', runtime => {
-    return read(`${SRC}: **/*.pug, ! **/*.tpl.pug`)
-        .then(pug({pkg: runtime.pkg}))
-        .then(wrap('', runtime.comment_html))
-        .then(write(mapper, {overwrite: true}));
-});
-
-ghu.task('build:copy', runtime => {
-    const mapper_root = mapfn.p(ROOT, join(BUILD, '_h5ai'));
-
-    return Promise.all([
-        read(`${SRC}/**/conf/*.json`)
-            .then(wrap(runtime.comment_js))
-            .then(write(mapper, {overwrite: true, cluster: true})),
-
-        read(`${SRC}: **, ! **/*.js, ! **/*.less, ! **/*.pug, ! **/conf/*.json`)
-            .then(each(obj => {
-                if ((/index\.php$/).test(obj.source)) {
-                    obj.content = obj.content.replace('{{VERSION}}', runtime.pkg.version);
-                }
-            }))
-            .then(write(mapper, {overwrite: true, cluster: true})),
-
-        read(`${ROOT}/*.md`)
-            .then(write(mapper_root, {overwrite: true, cluster: true}))
-    ]);
-});
-
-ghu.task('build:tests', ['build:styles'], 'build the test suite', () => {
-    return Promise.all([
-        read(`${BUILD}/_h5ai/public/css/styles.css`)
-            .then(write(`${BUILD}/test/h5ai-styles.css`, {overwrite: true})),
-
-        read(`${TEST}/index.html`)
-            .then(write(`${BUILD}/test/index.html`, {overwrite: true})),
-
-        read(`${TEST}: index.js`)
-            .then(webpack(WEBPACK_CFG))
-            .then(wrap(`\n\n// @include "${SRC}/**/js/pre.js"\n\n`))
-            .then(includeit())
-            .then(write(mapfn.p(TEST, `${BUILD}/test`), {overwrite: true}))
-    ]).then(() => {
-        console.log(`browse to file://${BUILD}/test/index.html to run the test suite`);
-    });
-});
-
-ghu.task('build', ['build:scripts', 'build:styles', 'build:pages', 'build:copy', 'build:tests'],
-    'build all updated files, optionally use :production');
-
-ghu.task('deploy', ['build'], 'deploy to a specified path with :dest=/some/path', runtime => {
-    if (typeof runtime.args.dest !== 'string') {
-        throw new Error('no destination path (e.g. :dest=/some/path)');
-    }
-    console.log(`deploy to ${runtime.args.dest}`);
-
-    const mapper_deploy = mapfn.p(BUILD, resolve(runtime.args.dest));
-
-    return read(`${BUILD}/_h5ai/**`)
-        .then(write(mapper_deploy, {overwrite: true, cluster: true}));
-});
-
-ghu.task('watch', runtime => {
-    return watch([SRC, TEST], () => ghu.run(runtime.sequence.filter(x => x !== 'watch'), runtime.args, true));
-});
-
-ghu.task('release', ['force-production', 'clean', 'build'], 'create a zipball', runtime => {
-    const target = join(BUILD, `${runtime.pkg.name}-${runtime.pkg.version}.zip`);
-
-    return read(`${BUILD}/_h5ai/**`)
-        .then(jszip({dir: BUILD, level: 9}))
-        .then(write(target, {overwrite: true}));
-});