Merge pull request #167 from googlefonts/SZP1

Add Size of Paint 1 [SZP1] axis

Lib/axisregistry/data/size_paint_1.textproto

@@ -0,0 +1,17 @@
+#Size of Paint 1, based on https://github.com/petrvanblokland/TYPETR-Bitcount
+tag: "SZP1"
+display_name: "Size of Paint 1"
+min_value: -100
+default_value: 0
+max_value: 100
+precision: 0
+fallback {
+  name: "Default"
+  value: 0
+}
+fallback_only: false
+description: 
+  "Modifies the size of a paint element going from an initial size (0)"
+  " to positive values that increase the size (100%)"
+  " or negative values that shrink it down (-100%)."
+  " Reducing the size can create transparency."