add generic studio with leveler and limiter

studio/instant.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<instant>
+  <Main x="0" y="0" w="1600" h="882" current-tab="editor"/>
+  <Editor id="41" edit-horizontal-pane-pos="0.98120301961898804" notebook-shrunk="0" edit-vertical-pane-pos="0.89999997615814209" mixer-width="Wide" zoom-focus="ZoomFocusPlayhead" zoom="1957560" snap-to="SnapToBeat" snap-mode="SnapOff" internal-snap-to="SnapToBeat" internal-snap-mode="SnapOff" pre-internal-snap-to="SnapToBeat" pre-internal-snap-mode="SnapOff" edit-point="EditAtMouse" visible-track-count="-1" playhead="0" left-frame="0" y-origin="0" show-measures="1" maximised="0" follow-playhead="1" stationary-playhead="0" region-list-sort-type="ByEndInFile" mouse-mode="MouseObject" join-object-range="0" show-editor-mixer="0" show-editor-list="1" editor-list-page="0" show-marker-lines="0" nudge-clock-value="220500">
+    <Window name="Editor" visible="0" x-off="-1" y-off="-1" x-size="-1" y-size="-1" tabbed="1"/>
+    <Buttons>
+      <Press/>
+      <Release/>
+    </Buttons>
+    <Selection>
+      <StripableView id="339"/>
+      <Marker id="484" start="1"/>
+    </Selection>
+    <RegionList sort-type="ByEndInFile" sort-ascending="1" show-all="0" show-automatic-regions="1"/>
+    <ActionScript lua="Lua 5.3">c2NyaXB0cyA9IHt9IA==</ActionScript>
+    <ActionHooks/>
+    <EditorLocations clock-mode="BBT"/>
+  </Editor>
+  <Mixer mixer-rhs-pane1-pos="0.60000002384185791" mixer-rhs_pane2-pos="0.69999998807907104" mixer-list-hpane-pos="0.20175439119338989" mixer-inner-pane-pos="0.7356223464012146" narrow-strips="0" show-mixer="1" show-mixer-list="1" maximised="0" monitor-section-visible="0">
+    <Window name="Mixer" visible="1" x-off="0" y-off="0" x-size="1600" y-size="882" tabbed="0"/>
+    <PluginOrder/>
+  </Mixer>
+  <Preferences>
+    <Window name="Preferences" visible="0" x-off="-1" y-off="-1" x-size="-1" y-size="-1" tabbed="1"/>
+  </Preferences>
+  <Meterbridge show-meterbridge="0">
+    <geometry x-size="600" y-size="400" x-pos="1" y-pos="1"/>
+  </Meterbridge>
+</instant>

studio/plugins/489/state1/manifest.ttl

+@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix pset: <http://lv2plug.in/ns/ext/presets#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix state: <http://lv2plug.in/ns/ext/state#> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+<state.ttl>
+	lv2:appliesTo <http://gareus.org/oss/lv2/dpl#stereo> ;
+	a pset:Preset ;
+	rdfs:seeAlso <state.ttl> .
+

studio/plugins/489/state1/state.ttl

+@prefix atom: <http://lv2plug.in/ns/ext/atom#> .
+@prefix lv2: <http://lv2plug.in/ns/lv2core#> .
+@prefix pset: <http://lv2plug.in/ns/ext/presets#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix state: <http://lv2plug.in/ns/ext/state#> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
+
+<>
+	a pset:Preset ;
+	lv2:appliesTo <http://gareus.org/oss/lv2/dpl#stereo> ;
+	state:state [
+		<http://gareus.org/oss/lv2/dpl#uiscale> "1.0"^^xsd:float
+	] .
+

studio/studio.history

+<?xml version="1.0" encoding="UTF-8"?>
+<UndoHistory>
+  <UndoTransaction tv-sec="1539886985" tv-usec="22873" name="add marker">
+    <MementoCommand obj-id="34" type-name="ARDOUR::Locations">
+      <Locations/>
+      <Locations>
+        <Location id="484" name="mark1" start="0" end="0" flags="IsMark" locked="0" position-lock-style="AudioTime"/>
+      </Locations>
+    </MementoCommand>
+    <MementoCommand obj-id="42" type-name="SelectionMemento">
+      <SelectionMemento mouse-mode="MouseObject" zoom="1957560" left-frame="0" y-origin="0">
+        <Selection>
+          <StripableView id="213"/>
+        </Selection>
+      </SelectionMemento>
+      <SelectionMemento mouse-mode="MouseObject" zoom="1957560" left-frame="0" y-origin="0">
+        <Selection>
+          <Marker id="484" start="1"/>
+        </Selection>
+      </SelectionMemento>
+    </MementoCommand>
+  </UndoTransaction>
+</UndoHistory>

studio/studio.history.bak

+<?xml version="1.0" encoding="UTF-8"?>
+<UndoHistory>
+  <UndoTransaction tv-sec="1539886985" tv-usec="22873" name="add marker">
+    <MementoCommand obj-id="34" type-name="ARDOUR::Locations">
+      <Locations/>
+      <Locations>
+        <Location id="484" name="mark1" start="0" end="0" flags="IsMark" locked="0" position-lock-style="AudioTime"/>
+      </Locations>
+    </MementoCommand>
+    <MementoCommand obj-id="42" type-name="SelectionMemento">
+      <SelectionMemento mouse-mode="MouseObject" zoom="1957560" left-frame="0" y-origin="0">
+        <Selection>
+          <StripableView id="213"/>
+        </Selection>
+      </SelectionMemento>
+      <SelectionMemento mouse-mode="MouseObject" zoom="1957560" left-frame="0" y-origin="0">
+        <Selection>
+          <Marker id="484" start="1"/>
+        </Selection>
+      </SelectionMemento>
+    </MementoCommand>
+  </UndoTransaction>
+</UndoHistory>