estURI</code></a> method was
added to <code>URL</code>.
</p>

<p>
The <code>ParseWithReference</code> function has been renamed to <code>ParseWithFragment</code>.
</p>

<p>
<em>Updating</em>:
Code that uses the old fields will fail to compile and must be updated by hand.
The semantic changes make it difficult for the fix tool to update automatically.
</p>

<h2 id="cmd_go">The go command</h2>

<p>
Go 1 introduces the <a href="/cmd/go/">go command</a>, a tool for fetching,
building, and installing Go packages