chore: update license (#259)

* chore: update license

adds an Additional Use Grant and updates the change dates of the repository

* chore: formatting. add line breaks for consistency

LICENSE

@@ -12,9 +12,35 @@ Licensor:             Layr Labs, Inc.
 Licensed Work:        EigenLayer Middleware Contracts
                       The Licensed Work is (c) 2023 Layr Labs, Inc.
 
-Additional Use Grant: None.
-
-Change Date:          2025-10-16 (October 16th, 2025)
+Additional Use Grant:
+
+You may additionally use any of the software included in the following repositories
+[here](https://docs.google.com/spreadsheets/d/1PlJRow5C0GMqXZlIxRm5CEnkhH-gMV1wIdq1pCfbZco/edit?usp=sharing)
+(“Additional Use Grant Software”) for production commercial uses, but only if such
+uses are (i) built on or using the EigenLayer Protocol or EigenDA, and (ii) not
+Competing Uses. 
+
+“Competing Use” means any use of the Additional Use Grant Software in any product,
+protocol, application or service that is made available to third parties and that
+(i) substitutes for use of EigenLayer Protocol or EigenDA, (ii) offers the same or
+substantially similar functionality as the EigenLayer Protocol or EigenDA or
+(iii) is built on or using a protocol with substantially similar functionality as
+the EigenLayer Protocol.
+
+EigenLayer Protocol means the restaking protocol as further described in the
+documentation [here](https://docs.eigenlayer.xyz/), as updated from time to time. 
+
+EigenDA means the data availability protocol built on top of the EigenLayer
+Protocol as further described in the documentation
+[here](https://docs.eigenlayer.xyz/eigenda/overview), as updated from time to time. 
+
+Change Dates:
+
+- All commits at or prior to commit a23de118e7d16081d350c7f83c24261d1421b0ba
+(i.e. committed to this repository on or before May 19, 2024, the date of) have a
+change date of 2025-10-16 (October 16th, 2025)
+- All commits after a23de118e7d16081d350c7f83c24261d1421b0ba (i.e. committed to this
+repository after May 19, 2024) have a change date of 2027-05-01 (May 1st, 2027)
 
 Change License:       MIT