Fix the issues with multiple framelines - For multiple framelines, user move mouse from one frameline to another, the frame is not showed correctly. - Old implementation always draw normal frame on the frameline where mouse just leaving. - It is fixed by detecting leave-notify event and removing hover mark. - When user active a frame on a frameline that is not what old active frame is at, the old active frame is not deactivated. - It is fixed by calling frameline.deactive() of a frameline when a frame is activated on another frameline.

<inkscape-extension>
    <name>Frame</name>
    <id>MadButterfly.Frame</id>
	<dependency type="executable" location="extensions">MB_Frame.py</dependency>
	<dependency type="executable" location="extensions">inkex.py</dependency>
    <effect>
		<object-type>any</object-type>
		<effects-menu>
			<submenu _name="MadButterfly">
			</submenu>
		</effects-menu>
    </effect>
    <script>
        <command reldir="extensions" interpreter="python">MB_Frame.py</command>
    </script>
</inkscape-extension>