Previous versions are available here:
<a href="{{ ref $.Page "/version/1/0/0/code-of-conduct.md" }}">1.0</a>,
<a href="{{ ref $.Page "/version/1/1/0/code-of-conduct.md" }}">1.1</a>,
<a href="{{ ref $.Page "/version/1/2/0/code-of-conduct.md" }}">1.2</a>,
and <a href="{{ ref $.Page "/version/1/3/0/code-of-conduct.md" }}">1.3</a>.

Previous versions are available here:
<a href="{{ ref $.Page "/version/1/0/0/code-of-conduct.md" }}">1.0</a>,
<a href="{{ ref $.Page "/version/1/1/0/code-of-conduct.md" }}">1.1</a>,
<a href="{{ ref $.Page "/version/1/2/0/code-of-conduct.md" }}">1.2</a>,
<a href="{{ ref $.Page "/version/1/3/0/code-of-conduct.md" }}">1.3</a>,
and <a href="{{ ref $.Page "/version/1/4/code-of-conduct.md" }}">1.4</a>.

Add 1.4 to the list of previous versions
Add 1.4 to the list of previous versions

Given that 2.0 was recently published, this commit will add a link to
1.4 in the previous-versions.html file, so that it is easy to access to
this, now older version of the code of conduct, from the home page.
