v3.15.3 CHANGELOG entry

Author: softwareengineerprogrammer

CHANGELOG.rst

@@ -8,6 +8,8 @@ GEOPHIRES v3 (2023-2026)
 3.15
 ^^^^
 
+3.15.3: `Acre unit support (HIP-RA-X Reservoir Area) <https://github.com/softwareengineerprogrammer/GEOPHIRES/pull/176>`__ | `release <https://github.com/NREL/GEOPHIRES-X/releases/tag/v3.15.3>`__
+
 3.15: `Calculate S-DAC carbon revenue (BICYCLE); Reservoir Stimulation Capital Cost per Fracture Surface Area <https://github.com/NREL/GEOPHIRES-X/pull/510>`__ | `release <https://github.com/NREL/GEOPHIRES-X/releases/tag/v3.15.2>`__ | **Changed:** S-DAC carbon revenue is now calculated. See `the tracking issue <https://github.com/NatLabRockies/GEOPHIRES-X/issues/341>`__ for details.
 
 3.14