Adds citation metadata for research paper

Enables proper academic attribution by providing standardized citation information for the Flash Dynamic Mask Attention research work.

Includes author details, paper reference, and DOI for the arXiv preprint "Trainable Dynamic Mask Sparse Attention".

Author: LoserCheems

CITATION.cff

@@ -0,0 +1,50 @@
+cff-version: "1.2.0"
+date-released: 2025-6
+message: "If you use this software, please cite it using these metadata."
+title: "Flash Dynamic Mask Attention: Trainable Dynamic Mask Sparse Attention"
+url: "https://github.com/SmallDoges/flash-dmattn"
+authors:
+  - family-names: Shi
+    given-names: Jingze
+    email: losercheems@gmail.com
+  - family-names: Wu
+    given-names: Yifan
+    email: ywu012@connect.hkust-gz.edu.cn
+  - family-names: Wu
+    given-names: Bingheng
+    email: wubingheng52136@gmail.com
+  - family-names: Peng
+    given-names: Yiran
+    email: amagipeng@gmail.com
+  - family-names: Wang
+    given-names: Liangdong
+    email: wangliangdong@baai.ac.cn
+  - family-names: Liu
+    given-names: Guang
+    email: liuguang@baai.ac.cn
+  - family-names: Luo
+    given-names: Yuyu
+    email: yuyuluo@hkust-gz.edu.cn
+preferred-citation:
+  type: article
+  authors:
+    - family-names: Shi
+      given-names: Jingze
+    - family-names: Wu
+      given-names: Yifan
+    - family-names: Wu
+      given-names: Bingheng
+    - family-names: Peng
+      given-names: Yiran
+    - family-names: Wang
+      given-names: Liangdong
+    - family-names: Liu
+      given-names: Guang
+    - family-names: Luo
+      given-names: Yuyu
+  title: "Trainable Dynamic Mask Sparse Attention"
+  year: 2025
+  url: "https://arxiv.org/abs/2508.02124"
+  doi: "10.48550/arXiv.2508.02124"
+  journal: "arXiv preprint"
+  volume: "arXiv:2508.02124"