Add a ChangeLog entry for #309

Signed-off-by: William Desportes <williamdes@wdes.fr>

Author: williamdes

CHANGELOG.md

@@ -7,6 +7,7 @@
 * Fix lexer to not allow numbers with letters (#300)
 * Add support for INVISIBLE keyword (#292)
 * Fix the "$" might be a character used in a name (#301)
+* Fix use stream_select instead of non-blocking STDIN (#309)
 
 ## [4.6.1] - 2020-03-20