Update CHANGELOG.md

CHANGELOG.md

@@ -6,6 +6,14 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [PEP 440](https://www.python.org/dev/peps/pep-0440/)
 and uses [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [3.0.0]
+### Added
+- New funcionality to process multi bursts with `insar_tops_burst`.
+- The `--reference` and `--secondary` command-line options to indicate the reference and secondary bursts.
+- `burst2safe` is now called to get SAFE files from bursts.
+### Changed
+- Product name has changed to indicate relative orbit, lon/lat extent and reference and secondary dates.
+
 ## [2.0.0]
 ### Changed
 - Orbit files are now retrieved using the [s1-orbits](https://github.com/ASFHyP3/sentinel1-orbits-py) library.