Add v0.x highlights

Author: aedart

docs/+current/01_release-notes.md

@@ -24,7 +24,79 @@ _N/A - "Not available"._
 
 ## `v0.x` Highlights
 
-_TODO: ...incomplete, please review documentation at a later point_
+### "Mini" Testing Framework
+
+(_available since `v0.1`_)
+
+A "mini" testing framework for testing your CMake modules and scripts.
+
+```cmake
+define_test("has built assets" "has_built_assets")
+function(has_built_assets)
+    assert_file_exists("resources/images/menu_bg.png" MESSAGE "No menu bg")
+    assert_file_exists("resources/images/bg.png" MESSAGE "No background")
+    
+    # ...etc
+endfunction()
+```
+
+See [testing module](./modules/testing/cmake/index.md) for additional information.
+
+### Git
+
+(_available since `v0.1`_)
+
+Git related utilities.
+
+```cmake
+git_find_version_tag(
+    OUTPUT version
+    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}
+)
+
+message("${version}") # 1.15.2
+```
+
+See [git module](./modules/git/index.md) for additional information.
+
+### Version
+
+(_available since `v0.1`_)
+
+Helpers for dealing with a project’s versioning
+
+```cmake
+version_from_file(
+    FILE "version"
+    OUTPUT my_package
+)
+
+message("${my_package}_SEMVER") # 2.0.0-beta.3+AF1004
+```
+
+See [version module](./modules/version/index.md) for additional information.
+
+### Cache
+
+(_available since `v0.1`_)
+
+Module that offers additional caching functionality (_via CMake’s Cache Entry mechanism_).
+
+```cmake
+cache_set(
+    KEY foo
+    VALUE "bar"
+    TTL 5
+)
+
+# ... Elsewhere in your cmake scripts, 5 seconds later...
+
+cache_get(KEY foo)
+
+message("${foo}") # (empty string)
+```
+
+See [cache module](./modules/cache/index.md) for additional information.
 
 ## Changelog