Fixing LEF 'CLASS' on fill cells.

The fill cells should have 'CLASS' of 'CORE SPACER' in the LEF.

All fill cells should now have;
```lef
  CLASS CORE SPACER ;
```

Updating sky130_fd_sc_lp 0.0.2.

Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
diff --git a/README.rst b/README.rst
index 268d71b..2366f32 100644
--- a/README.rst
+++ b/README.rst
@@ -1,5 +1,5 @@
 :lib:`sky130_fd_sc_lp` - SKY130 Low Power Digital Standard Cells (SkyWater Provided)
 ====================================================================================
 
-Initial release of version (0, 0, 0).
+Initial release of version (0, 0, 1).
 
diff --git a/cells/diode/sky130_fd_sc_lp__diode_0.lef b/cells/diode/sky130_fd_sc_lp__diode_0.lef
index e620e5a..4a55a07 100644
--- a/cells/diode/sky130_fd_sc_lp__diode_0.lef
+++ b/cells/diode/sky130_fd_sc_lp__diode_0.lef
@@ -27,6 +27,7 @@
   SITE unit ;
   PIN DIODE
     ANTENNADIFFAREA  0.434700 ;
+    ANTENNAGATEAREA  0.000000 ;
     DIRECTION INOUT ;
     PORT
       LAYER li1 ;
diff --git a/cells/diode/sky130_fd_sc_lp__diode_1.lef b/cells/diode/sky130_fd_sc_lp__diode_1.lef
index fdf2525..e19d6a4 100644
--- a/cells/diode/sky130_fd_sc_lp__diode_1.lef
+++ b/cells/diode/sky130_fd_sc_lp__diode_1.lef
@@ -27,6 +27,7 @@
   SITE unit ;
   PIN DIODE
     ANTENNADIFFAREA  0.745200 ;
+    ANTENNAGATEAREA  0.000000 ;
     DIRECTION INOUT ;
     PORT
       LAYER li1 ;
diff --git a/cells/xnor3/sky130_fd_sc_lp__xnor3.specify.v.new b/cells/xnor3/sky130_fd_sc_lp__xnor3.specify.v.new
index 4d2849c..414a2a2 100644
--- a/cells/xnor3/sky130_fd_sc_lp__xnor3.specify.v.new
+++ b/cells/xnor3/sky130_fd_sc_lp__xnor3.specify.v.new
@@ -17,6 +17,7 @@
 */
 
 specify
+// arcs copied from scs8lp_xnor3_1
 if ((!B&!C)) (A +=> X) = (0:0:0,0:0:0);
 if ((!B&C)) (A -=> X) = (0:0:0,0:0:0);
 if ((B&!C)) (A -=> X) = (0:0:0,0:0:0);
diff --git a/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.specify.v b/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.specify.v
index 4d2849c..414a2a2 100644
--- a/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.specify.v
+++ b/cells/xnor3/sky130_fd_sc_lp__xnor3_lp.specify.v
@@ -17,6 +17,7 @@
 */
 
 specify
+// arcs copied from scs8lp_xnor3_1
 if ((!B&!C)) (A +=> X) = (0:0:0,0:0:0);
 if ((!B&C)) (A -=> X) = (0:0:0,0:0:0);
 if ((B&!C)) (A -=> X) = (0:0:0,0:0:0);