Update symbols

Update symbols from build logs.
Update changelog to hirsute.

debian/changelog

@@ -1,3 +1,10 @@
+liblxqt (0.15.0-0ubuntu2) hirsute; urgency=medium
+
+  * Welcome to Hirsute Hippo.
+  * Update symbols from build logs.
+
+ -- apt-ghetto <apt-ghetto@lubuntu.me>  Mon, 02 Nov 2020 14:05:02 +0100
+
 liblxqt (0.15.0-0ubuntu1) groovy; urgency=medium
 
   * New upstream release.

debian/liblxqt0.symbols

@@ -222,7 +222,7 @@ liblxqt.so.0 liblxqt0 #MINVER#
  (c++)"LXQt::Settings::Settings(QSettings const*, QString const&, QObject*)@Base" 0.9.0+20150911
  (c++)"LXQt::Settings::Settings(QString const&, QObject*)@Base" 0.9.0+20150911
  (c++)"LXQt::Settings::Settings(QString const&, QSettings::Format, QObject*)@Base" 0.9.0+20150911
- (c++)"LXQt::Settings::_fileChanged(QString)@Base" 0.9.0+20150911
+ (c++)"LXQt::Settings::_fileChanged(QString const&)@Base" 0.15.0+git20201102
  (c++)"LXQt::Settings::addWatchedFile(QString const&)@Base" 0.10.0
  (c++)"LXQt::Settings::event(QEvent*)@Base" 0.9.0+20150911
  (c++)"LXQt::Settings::fileChanged()@Base" 0.9.0+20150911