Add gender symbols (Proposal 1) (#2)

Author: MDLC01

src/modules/sym.txt

@@ -1113,3 +1113,18 @@ errorbar
   .diamond.filled ⧱
   .circle.stroked ⧲
   .circle.filled ⧳
+
+gender {
+  female ♀
+    .double ⚢
+    .male ⚤
+  intersex ⚥
+  male ♂
+    .double ⚣
+    .female ⚤
+    .stroke ⚦
+    .stroke.t ⚨
+    .stroke.r ⚩
+  neuter ⚲
+  trans ⚧
+}