Added a bare wirebond pad structure to the list of cells in the sky130_ef_io library.

diff --git a/VERSION b/VERSION
index a747663..818b8de 100644
--- a/VERSION
+++ b/VERSION

@@ -1 +1 @@
-1.0.80
+1.0.81

diff --git a/sky130/custom/sky130_fd_io/gds/sky130_ef_io__bare_pad.gds b/sky130/custom/sky130_fd_io/gds/sky130_ef_io__bare_pad.gds
new file mode 100644
index 0000000..35ad79c
--- /dev/null
+++ b/sky130/custom/sky130_fd_io/gds/sky130_ef_io__bare_pad.gds
Binary files differ

diff --git a/sky130/custom/sky130_fd_io/lef/sky130_ef_io__bare_pad.lef b/sky130/custom/sky130_fd_io/lef/sky130_ef_io__bare_pad.lef
new file mode 100644
index 0000000..09f9999
--- /dev/null
+++ b/sky130/custom/sky130_fd_io/lef/sky130_ef_io__bare_pad.lef

@@ -0,0 +1,28 @@
+VERSION 5.7 ;
+  NOWIREEXTENSIONATPIN ON ;
+  DIVIDERCHAR "/" ;
+  BUSBITCHARS "[]" ;
+MACRO sky130_ef_io__bare_pad
+  CLASS BLOCK ;
+  FOREIGN sky130_ef_io__bare_pad ;
+  ORIGIN 2.700 2.700 ;
+  SIZE 65.400 BY 75.400 ;
+  PIN PAD
+    PORT
+      LAYER met4 ;
+        RECT -2.700 70.000 62.700 72.700 ;
+        RECT -2.700 0.000 0.000 70.000 ;
+        RECT 60.000 0.000 62.700 70.000 ;
+        RECT -2.700 -2.700 62.700 0.000 ;
+      LAYER via4 ;
+        RECT -2.580 71.400 62.580 72.580 ;
+        RECT -2.580 -1.400 -1.400 71.400 ;
+        RECT 61.400 -1.400 62.580 71.400 ;
+        RECT -2.580 -2.580 62.580 -1.400 ;
+      LAYER met5 ;
+        RECT -2.700 -2.700 62.700 72.700 ;
+    END
+  END PAD
+END sky130_ef_io__bare_pad
+END LIBRARY
+

diff --git a/sky130/custom/sky130_fd_io/mag/sky130_ef_io__bare_pad.mag b/sky130/custom/sky130_fd_io/mag/sky130_ef_io__bare_pad.mag
new file mode 100644
index 0000000..bfaf97c
--- /dev/null
+++ b/sky130/custom/sky130_fd_io/mag/sky130_ef_io__bare_pad.mag

@@ -0,0 +1,29 @@
+magic
+tech sky130A
+timestamp 1607107368
+<< metal4 >>
+rect -270 7258 6270 7270
+rect -270 -258 -258 7258
+rect -140 7000 6140 7140
+rect -140 0 0 7000
+rect 6000 0 6140 7000
+rect -140 -140 6140 0
+rect 6258 -258 6270 7258
+rect -270 -270 6270 -258
+<< via4 >>
+rect -258 7140 6258 7258
+rect -258 -140 -140 7140
+rect 6140 -140 6258 7140
+rect -258 -258 6258 -140
+<< metal5 >>
+rect -270 7258 6270 7270
+rect -270 -258 -258 7258
+rect -140 -140 6140 7140
+rect 6258 -258 6270 7258
+rect -270 -270 6270 -258
+<< glass >>
+rect 0 0 6000 7000
+<< labels >>
+flabel metal5 -140 -140 6140 7140 0 FreeSans 800 0 0 0 PAD
+port 0 nsew
+<< end >>