Webpack 4 deprecation warning

[stormojm]

Resources:
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Stencil version:
@stencil/webpack: 0.0.6

I'm submitting a ... (check one with "x")
[x] bug report
[ ] feature request

Current behavior:
During compilation, webpack outputs a deprecation warning:
DeprecationWarning: Tapable.plugin is deprecated. Use new API on .hooks instead
at StencilPlugin.apply ((localpath)\node_modules@stencil\webpack\dist\index.js:14:18)
at webpack ((localpath)\node_modules\webpack\lib\webpack.js:49:13)

Expected behavior:
This plugin should be updated to work correctly with the Webpack 4 API, especially since webpack 5 will likely be dropping support for the older plugin apis.

Steps to reproduce:
Compile any webpack project which uses @stencil/webpack

Other information:
The culprit seems to be the use of .plugin('emit'). This should be updated to use the new .tab instead.