The major new feature of this release is battery support, as tested from feedback in issue #22 and the battery.1 through battery.8 pre-releases. Battery data from modbus is not universally enabled by SolarEdge: you may need to contact your installer or SolarEdge support to have them enabled. Some newer battery systems may not support the old style registers. See the discussion Battery integration #63 for more information.
Other changes:
Full Changelog: v2.0.3...v2.0.5
Release v2.0.4 was skipped because it contains an init bug fixed in c689da7.