Added U+25A4..25A9 Squares with fill ▤▥▦▧▨▩ (closes #450)

Author: tonsky

CHANGELOG.md

@@ -4,6 +4,7 @@ All notable changes to this project will be documented in this file.
 
 #### 3.0
 
+- Added U+25A4..25A9 Squares with fill `▤▥▦▧▨▩` [#450]
 - Slightly tuned multiple ampersands in `ss03` [#831]
 - Fixed horizontal bar height in `<!--` [#917]
 - Fixed multiply sign in `0xFF` and `10x10` with combination of `onum` and `zero` [#888]