Merge branch 'develop' into 'main'

Merge updated changelog for release 7.11.20

See merge request devel/gdx!134

Author: 0x17

changelog.yaml

@@ -1,4 +1,8 @@
 ---
+- 7.11.20:
+    - Use zlib library from system if found (instead of fetching its sources as submodule from GitHub and baking them into GDX)
+    - Minor changes to make it compile well when cross-compiling on Linux with MinGW (header names must match case-sensitive)
+    - Stream classes get interface needed by GAMS compiler and execution system library
 - 7.11.19:
     - Extended and updated internal runtime library for use in other GAMS products
     - Added unit test for trim functions and raw uel insertion