dual_voice v4.3

an updated release in response to the reported issue #2

dual_voice v4.2

Some bugs fixed.

dual_voice v4.1

A bug that only shows the initial primary voice in the dual voice setting is fixed in this update.

dual_voice v4.0

This new version is compatible with the NVDA version 2019.3 and above.

dual_voice v3.1

dual_voice v3.1 which is compatible with NVDA 2019.2.1