font-patcher: Increase h-overlap, decrease v-overlap

[why]
On some machine the gap is still visible, but with 4% overlap the
result looks good.

[how]
Increase the overlap from 3% to 4%.

Cascadia Code has 8% of overlap, but they have a special extension to
the overlap side, we will have a visual glitch if the overlap becomes
too big. So lets stay with 4% or we should change the basis for the
powerline glyphs.

Signed-off-by: Fini Jastrow <ulf.fini.jastrow@desy.de>

font-patcher

@@ -688,33 +688,33 @@ class font_patcher:
             'default': {'align': 'c', 'valign': 'c', 'stretch': 'pa', 'params': {}},
 
             # Arrow tips
-            0xe0b0: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.03, 'xy-ratio': 0.7}},
+            0xe0b0: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.04, 'xy-ratio': 0.7}},
             0xe0b1: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'xy-ratio': 0.7}},
-            0xe0b2: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.03, 'xy-ratio': 0.7}},
+            0xe0b2: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.04, 'xy-ratio': 0.7}},
             0xe0b3: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'xy-ratio': 0.7}},
 
             # Rounded arcs
-            0xe0b4: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.03, 'xy-ratio': 0.59}},
+            0xe0b4: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.04, 'xy-ratio': 0.59}},
             0xe0b5: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'xy-ratio': 0.5}},
-            0xe0b6: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.03, 'xy-ratio': 0.59}},
+            0xe0b6: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.04, 'xy-ratio': 0.59}},
             0xe0b7: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'xy-ratio': 0.5}},
 
             # Bottom Triangles
-            0xe0b8: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.03}},
+            0xe0b8: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.04}},
             0xe0b9: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {}},
-            0xe0ba: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.03}},
+            0xe0ba: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.04}},
             0xe0bb: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {}},
 
             # Top Triangles
-            0xe0bc: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.03}},
+            0xe0bc: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.04}},
             0xe0bd: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {}},
-            0xe0be: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.03}},
+            0xe0be: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.04}},
             0xe0bf: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {}},
 
             # Flames
-            0xe0c0: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.03}},
+            0xe0c0: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.04}},
             0xe0c1: {'align': 'l', 'valign': 'c', 'stretch': 'xy2', 'params': {}},
-            0xe0c2: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.03}},
+            0xe0c2: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {'overlap': 0.04}},
             0xe0c3: {'align': 'r', 'valign': 'c', 'stretch': 'xy2', 'params': {}},
 
             # Small squares
@@ -739,8 +739,8 @@ class font_patcher:
             0xe0d1: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.02}},
 
             # Top and bottom trapezoid
-            0xe0d2: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.03, 'xy-ratio': 0.7}},
-            0xe0d4: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.03, 'xy-ratio': 0.7}}
+            0xe0d2: {'align': 'l', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.04, 'xy-ratio': 0.7}},
+            0xe0d4: {'align': 'r', 'valign': 'c', 'stretch': 'xy', 'params': {'overlap': 0.04, 'xy-ratio': 0.7}}
         }
 
         SYM_ATTR_DEFAULT = {