Add a switch box widget and use it for filter options in build

novelwriter/extensions/switch.py

@@ -23,7 +23,6 @@ You should have received a copy of the GNU General Public License
 along with this program. If not, see <https://www.gnu.org/licenses/>.
 """
 
-import logging
 import novelwriter
 
 from PyQt5.QtGui import QPainter
@@ -32,8 +31,6 @@ from PyQt5.QtWidgets import QSizePolicy, QAbstractButton
 
 from novelwriter.constants import nwUnicode
 
-logger = logging.getLogger(__name__)
-
 
 class NSwitch(QAbstractButton):