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_hdll 0.1.0.

Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_1.lef b/cells/fill/sky130_fd_sc_hdll__fill_1.lef
index a973f6c..0911ac2 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_1.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_1.lef
@@ -24,7 +24,7 @@
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_1
   ORIGIN  0.000000  0.000000 ;
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   SYMMETRY X Y R90 ;
   SIZE  0.460000 BY  2.720000 ;
   SITE unithd ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_1.magic.lef b/cells/fill/sky130_fd_sc_hdll__fill_1.magic.lef
index 0960c9c..b44c044 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_1.magic.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_1.magic.lef
@@ -27,7 +27,7 @@
   MACRO originalViewName STRING ;
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_1
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   FOREIGN sky130_fd_sc_hdll__fill_1 ;
   ORIGIN  0.000000  0.000000 ;
   SIZE  0.460000 BY  2.720000 ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_2.lef b/cells/fill/sky130_fd_sc_hdll__fill_2.lef
index 53edda3..c92b70c 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_2.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_2.lef
@@ -24,7 +24,7 @@
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_2
   ORIGIN  0.000000  0.000000 ;
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   SYMMETRY X Y R90 ;
   SIZE  0.920000 BY  2.720000 ;
   SITE unithd ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_2.magic.lef b/cells/fill/sky130_fd_sc_hdll__fill_2.magic.lef
index 79f1335..868f37b 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_2.magic.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_2.magic.lef
@@ -27,7 +27,7 @@
   MACRO originalViewName STRING ;
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_2
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   FOREIGN sky130_fd_sc_hdll__fill_2 ;
   ORIGIN  0.000000  0.000000 ;
   SIZE  0.920000 BY  2.720000 ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_4.lef b/cells/fill/sky130_fd_sc_hdll__fill_4.lef
index 8408fba..5af74f7 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_4.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_4.lef
@@ -24,7 +24,7 @@
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_4
   ORIGIN  0.000000  0.000000 ;
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   SYMMETRY X Y R90 ;
   SIZE  1.840000 BY  2.720000 ;
   SITE unithd ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_4.magic.lef b/cells/fill/sky130_fd_sc_hdll__fill_4.magic.lef
index b5586bc..3eda9ee 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_4.magic.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_4.magic.lef
@@ -27,7 +27,7 @@
   MACRO originalViewName STRING ;
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_4
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   FOREIGN sky130_fd_sc_hdll__fill_4 ;
   ORIGIN  0.000000  0.000000 ;
   SIZE  1.840000 BY  2.720000 ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_8.lef b/cells/fill/sky130_fd_sc_hdll__fill_8.lef
index a05d6ac..a02ef06 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_8.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_8.lef
@@ -24,7 +24,7 @@
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_8
   ORIGIN  0.000000  0.000000 ;
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   SYMMETRY X Y R90 ;
   SIZE  3.680000 BY  2.720000 ;
   SITE unithd ;
diff --git a/cells/fill/sky130_fd_sc_hdll__fill_8.magic.lef b/cells/fill/sky130_fd_sc_hdll__fill_8.magic.lef
index a0acaff..fe2865c 100644
--- a/cells/fill/sky130_fd_sc_hdll__fill_8.magic.lef
+++ b/cells/fill/sky130_fd_sc_hdll__fill_8.magic.lef
@@ -27,7 +27,7 @@
   MACRO originalViewName STRING ;
 END PROPERTYDEFINITIONS
 MACRO sky130_fd_sc_hdll__fill_8
-  CLASS CORE ;
+  CLASS CORE SPACER ;
   FOREIGN sky130_fd_sc_hdll__fill_8 ;
   ORIGIN  0.000000  0.000000 ;
   SIZE  3.680000 BY  2.720000 ;