update CHANGELOG

CHANGELOG.md

@@ -10,6 +10,7 @@ and uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 ## [Unreleased]
 
 ### Added
+* Added check for intermediate grid creation in _get_delays_on_cube
 * Adds an `s1_orbits.py` module which includes:
   * `get_orbits_from_slc_ids` to download the associated orbit files for a list of Sentinel-1 SLC IDs
   * `ensure_orbit_credentials` to ensure ESA CSDE credentials have been provides to download orbit files. This should be called before `sentineleof` is used to download orbits.