Support for rollup >= 0.56.x?

[utkarsh2102]

With rollup 0.56.3, the build fails with the following logs:

NODE_PATH=debian/node_modules gulp pack
[01:25:28] Local gulp not found in ~/sakshi/rainbow/rainbow.js
[01:25:28] Try running: npm install gulp
[01:25:28] Using globally installed gulp
[01:25:30] Using gulpfile ~/sakshi/rainbow/rainbow.js/gulpfile.js
[01:25:30] Starting 'pack'...
The following options have been renamed — please update your config: entry -> input
Unknown option found: moduleName, dest. Allowed keys: input, legacy, treeshake, acorn, acornInjectPlugins, context, moduleContext, plugins, onwarn, watch, cache, preferConst, experimentalDynamicImport, experimentalCodeSplitting, preserveSymlinks, entry, external, extend, amd, banner, footer, intro, format, outro, sourcemap, sourcemapFile, name, globals, interop, legacy, freeze, indent, strict, noConflict, paths, exports, file, dir, pureExternalModules
[01:25:31] 'pack' errored after 322 ms
[01:25:31] Error: You must supply output.name for UMD bundles
    at Object.error [as default] (/usr/share/nodejs/rollup/src/utils/error.js:10:15)
    at umd (/usr/share/nodejs/rollup/src/finalisers/umd.js:30:24)
    at /usr/share/nodejs/rollup/src/Chunk.js:585:27
    at process._tickCallback (internal/process/next_tick.js:68:7)