Improvements in comments

- registerEventType(): comment the cryptic _ variable
- Room::postEvent: document the return value
- Room::Private: upgrade comments to doc-comments - even though in Private, they still are helpful to show hints in IDEs.
- General cleanup

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/converters.h b/lib/converters.h
index 70938ab9..53855a1f 100644
--- a/lib/converters.h
+++ b/lib/converters.h
@@ -61,7 +61,7 @@ namespace QMatrixClient
     inline auto toJson(const QJsonValue& val) { return val; }
     inline auto toJson(const QJsonObject& o) { return o; }
     inline auto toJson(const QJsonArray& arr) { return arr; }
-    // Special-case QStrings and bools to avoid ambiguity between QJsonValue
+    // Special-case QString to avoid ambiguity between QJsonValue
     // and QVariant (also, QString.isEmpty() is used in _impl::AddNode<> below)
     inline auto toJson(const QString& s) { return s; }