chore(main): release 6.1.2 (#647)

Co-authored-by: flixopt-release-bot[bot] <246706635+flixopt-release-bot[bot]@users.noreply.github.com>

Author: flixopt-release-bot[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "6.1.1"
+  ".": "6.1.2"
 }

CHANGELOG.md

@@ -11,6 +11,13 @@ For more details regarding the individual PRs and contributors, please refer to
 
 ---
 
+## [6.1.2](https://github.com/flixOpt/flixopt/compare/v6.1.1...v6.1.2) (2026-03-30)
+
+
+### Bug Fixes
+
+* allow expand() on clustered FlowSystem without a solution ([#646](https://github.com/flixOpt/flixopt/issues/646)) ([2d4a507](https://github.com/flixOpt/flixopt/commit/2d4a507265413f5a10c917fb67fab650e8b97132))
+
 ## [6.1.1](https://github.com/flixOpt/flixopt/compare/v6.1.0...v6.1.1) (2026-03-24)
 
 

CITATION.cff

@@ -2,7 +2,7 @@ cff-version: 1.2.0
 message: "If you use this software, please cite it as below and consider citing the related publication."
 type: software
 title: "flixopt"
-version: 6.1.1 # x-release-please-version
+version: 6.1.2 # x-release-please-version
 date-released: 2026-03-23
 url: "https://github.com/flixOpt/flixopt"
 repository-code: "https://github.com/flixOpt/flixopt"