Add missing changelog entries for a few PRs that will go into 0.8.17

Author: cameel

Changelog.md

@@ -15,6 +15,12 @@ Compiler Features:
 
 Bugfixes:
  * Type Checker: Fix internal compiler error on tuple assignments with invalid left-hand side.
+ * Yul IR Code Generation: Fix internal compiler error when accessing the ``.slot`` member of a mapping through a storage reference in inline assembly.
+
+
+Build System:
+ * Allow disabling pedantic warnings and do not treat warnings as errors during compiler build when ``-DPEDANTIC=OFF`` flag is passed to CMake.
+ * Update emscripten to version 3.1.19.
 
 
 ### 0.8.16 (2022-08-08)