CHANGELOG: Polish up.
CHANGELOG: Polish up.

Flesh out the sentences.  Add more details.  Clarify when the regressions
happened.

Signed-off-by: Luke Shumaker <1abe3165bcc8c29e8b31e5c88636540fb9350004@datawire.io>

datawire/telepresence,datawire/telepresence,datawire/telepresence