Update CHANGELOG.md

Author: ahojukka5

CHANGELOG.md

@@ -1,17 +1,26 @@
 # Changelog
 
-## [0.1.1] -
+## [0.1.1] - 2024-06-13
 
 - Make some changes to tungsten and aluminum models to be more consistent with
   the use of minus signs in different operators: move minus sign from peak
   function to opCk operator (commits 8685f7a and b4392b3).
 - Bug fixes and changes in CMakeLists.txt: conditionally install nlohmann_json
   headers (issue #16), do not add RPATH to binaries when installing them,
   (commit 6c91de3) and also install binaries to INSTALL_PREFIX/bin (issue #14).
-- Start using clang-format in the project (ci pipeline).
+- Start using clang-format in the project (ci pipeline). (Issue #43)
 - Add possibility to add initial and boundary conditions to fields with other
-  name than "default".
-- Add schema file for the input file.
+  name than "default". (Commit c65fb23)
+- Add schema file for the input file. (Commit 6eeeab9)
+- Fix license headers in source files, add license header checker to GH Action
+  and in general improve licensing information. (Issues #25, #39, #40)
+- Replace `#pragma once` with a proper include guard in all header files. (Issue
+  #48)
+- Fix bug with clang-tidy configuration preventing compilation. (Issue #52)
+- Major updates to README.md: update citing information, add description of
+  application structure, add new images, scalability results, and add example
+  simulation of Cahn-Hilliard equation. (Issues #5, #19, #22, #23, #27, #28,
+  #40)
 
 ## [0.1.0] - 2023-08-17