_type::{read, write}</code> now deprecated, replaced by <code>{read_only, write_only}</code> (Note: implicitly-usable <code>read_only</code>, <code>write_only</code> constants in attribute (in <code>REFL_...</code> macros) context remain unchanged)</li>
<li><code>refl::descriptor::field_descriptor::operator()</code> now supports acting as a setter. <code>refl::descriptor::make_invoker</code> is now no longer needed and marked as deprecated.</li>
</ul>
<h2><a class="anchor" id="autotoc_md25"></a>
v0.4.0</h2>