v0.10.3: Handle server initiated connection close.

Server initaited close frames were being treated as an unexpected frame
and did not correctly propagate the contained error to the user.

Resolves #151

v0.10.2

Use package scoped rand source to avoid duplicate link names.

v0.10.1: Adding Message.UnmarshalBinary

Fixes #141

v0.10.0: Export LinkSourceFilter and remove LinkSessionFilter.

LinkSourceFilter allows non-standardized source filters, such as those
specific to a particular broker implementation, to be constructed.

This obsoletes the need for the Microsoft specific LinkSessionFilter
to be included in the API.

v0.9.1

Add LinkSourceDurability and LinkSourceExpiryPolicy options.

v0.9.0: Default batching to false.

Batching has been enabled by default since the early days of this
library. In retrospect I think this was a mistake. I believe most users
would expect messages to be acknowledged immediately when calling
`Message.Accept()` (evidenced in #127). Requiring explicit opt-in
should lessen the risk of bugs due to the batching behavior.

v0.8.0: Making SessionID nillable when creating a new Link.

Fixes #134

v0.7.4

Add deliverytag to Message type (#126)

v0.7.3

add read from link.rx when sending a detach to eliminate deadlock on …

v0.7.2

Fix null type handling in readAny (#117)