Alternative diagram example using gitGraph

Author: acolombier

docs/roadmap.md

@@ -34,3 +34,81 @@ timeline
         2.7.x: Alpha (2024/12/01): Beta (2025/05/01): 2.6.0 (xxxx/xx/xx)
 
 ```
+
+## Alternative graph
+
+```mermaid
+%%{init: { 'logLevel': 'debug', 'theme': 'neutral', 'themeVariables': {
+              'git0': '#323632', 'gitBranchLabel0': '#ffffff',
+              'git1': '#323632', 'gitBranchLabel1': '#ffffff',
+              'git2': '#139013', 'gitBranchLabel2': '#ffffff',
+              'git3': '#13901344', 'gitBranchLabel3': '#ffffff44',
+              'git4': '#32363244', 'gitBranchLabel4': '#ffffff44',
+              'git5': '#32363244', 'gitBranchLabel5': '#ffffff44',
+                'commitLabelColor': '#ccc',
+              'commitLabelBackground': '#00000000',
+              'commitLabelFontSize': '8px',
+              'tagLabelFontSize': '10px',
+              'tagLabelBackground': '#323632',
+              'tagLabelBorder': '#555555',
+              'tagLabelColor': '#ccc'
+       },
+    'gitGraph': {
+    'rotateCommitLabel': false,
+    'mainBranchName': '2.2',
+    'mainBranchOrder': false,
+    'showBranches': false
+    } } }%%
+gitGraph:
+    commit id: " "
+    branch 2.3
+    commit id: " "
+    branch "2.4 (Current release)"
+    commit id: " "
+    branch "2.5 (Next release)"
+    commit id: " "
+    branch 2.6
+    commit id: " "
+    branch 2.7
+    commit id: " "
+    checkout 2.2
+    commit id: "2018-12-24" tag: "2.2.0"
+    commit id: "2019-04-22" tag: "2.2.1"
+    commit id: "2019-08-10" tag: "2.2.2"
+    commit id: "2019-11-26" tag: "2.2.3"
+    checkout 2.3
+    commit id: "2020-05-12" tag: "2.3-beta"
+    checkout "2.4 (Current release)"
+    commit id: "2020-05-12 " tag: "2.4-alpha"
+    checkout 2.2
+    commit id: "2020-05-15" tag: "2.2.4"
+    commit id: "2021-02-17" tag: "2.2.4.1"
+    checkout 2.3
+    commit id: "2021-06-28" tag: "2.3.0"
+    commit id: "2021-09-29" tag: "2.3.1"
+    commit id: "2022-01-30" tag: "2.3.2"
+    commit id: "2022-06-21" tag: "2.3.3"
+    checkout "2.5 (Next release)"
+    commit id: "2023-01-11" tag: "2.5-alpha"
+    checkout 2.3
+    commit id: "2023-03-03" tag: "2.3.4"
+    commit id: "2023-05-10" tag: "2.3.5"
+    checkout "2.4 (Current release)"
+    commit id: "2023-05-29" tag: "2.4-beta"
+    checkout 2.3
+    commit id: "2023-08-15" tag: "2.3.6"
+    checkout "2.4 (Current release)"
+    commit id: "2024-02-16" tag: "2.4.0"
+    commit id: "2024-05-08" tag: "2.4.1"
+    checkout 2.6
+    commit id: "2024-05-26" tag: "2.6-alpha"
+    checkout "2.5 (Next release)"
+    commit id: "2024-06-10" tag: "2.5-beta"
+    checkout 2.7
+    commit id: "2024-12-01 " tag: "2.7-alpha"
+    checkout 2.6
+    commit id: "2024-12-01" tag: "2.6-beta"
+    checkout 2.7
+    commit id: "2025-05-01" tag: "2.7-beta"
+
+```