Don't add attr quotes by default.. err at least not in a buggy way

[valpackett]

This is kinda the inverse of #12 :)

I've been wondering why certain event handlers were completely absent in the production build of my app…

Turns out

            html`
                <input type="text" .value=${propval} @change=${e =>
                    this._modify(draft => draft.properties[propname][idx] = e.target.value)
                }/>
            `

was being minified into

Be`<input type="text" .value="${r}" @change="${e=>this._modify((r=>r.properties[t][o]=e.target.value))}/">`

Look at that slash — it was consumed into the quoted string!

[asyncLiz]

The quotes are added by html-minifier because it sees @change=${...}/ and it believes the trailing slash is part of the attribute. So options to fix this:

• Remove the /, void elements like <input> don't need them
• Add a space like@change=${...} /> so that html-minifier understands the slash is not part of the attribute
• Add quotes around @change="${...}"/> so that html-minifier understands the slash is not part of the attribute
• Try setting keepClosingSlash: true in html-minifier's options (not sure if that will work, but it might if you don't want to do any of the other options)