Add a CHANGELOG entry for #292 and #301

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

Author: williamdes

CHANGELOG.md

@@ -5,6 +5,8 @@
 * EXISTS is also a function. (#297)
 * Remove some useless dev-dependencies
 * 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)
 
 ## [4.6.1] - 2020-03-20