Updated release notes

Signed-off-by: Eran Ifrah <[email protected]>

docs/docs/release_notes/v19_0_0.md

@@ -21,6 +21,11 @@ As always, all downloads are available through our [download page][1]
 - Use better colour for drawing default text in the build output pane Build output view: do not centre on the clicked line, unless the operation came from the keyboard (e.g. user hit ++f4++)
 - Matching brace highlight is now done faster, this is done by reducing the idle event interval to min of `100ms`
 - Highlight word: minor performance improvement: check that we have marker before clearing the markers
+- Configurable "Find next"/"Find previous" behaviour when the "Find" dialog is not visible (#3570)
+- Find dialog: user can now use the arrows (up/down) to toggle through the previous searches / replacements
+- [CodeLite doesn't detect existing mingw-w64 installations][3]
+
 
 [1]: https://downloads.codelite.org
 [2]: https://github.com/eranif/codelite/issues/3566
+[3]: https://github.com/eranif/codelite/issues/3326