Change "Misc" to showcontent=True

Many of these miscellaneous items would actually be interesting to
downstream consumers, even though they are not "bugfixes" (e.g. changes
to the test suite or package metadata). Rather than ask contributors to
decide whether their contribution meets this standard, we'll instead
manually curate which PRs are "hidden" in the changelog.

changelog.d/template.rst

@@ -9,15 +9,10 @@
 {{ definitions[category]['name'] }}
 {{ underline * definitions[category]['name']|length }}
 
-{% if definitions[category]['showcontent'] %}
 {% for text, values in sections[section][category].items() %}
 - {{ text }}
 {% endfor %}
 
-{% else %}
-- {{ sections[section][category]['']|join(', ') }}
-
-{% endif %}
 {% if sections[section][category]|length == 0 %}
 No significant changes.
 

pyproject.toml

@@ -44,5 +44,5 @@ build-backend = "setuptools.build_meta"
     [[tool.towncrier.type]]
         directory = "misc"
         name = "Misc"
-        showcontent = false
+        showcontent = true