Release v0.9.1 adds support for Azure SAS Tokens (by Kenny Johansson)
and fixes several bugs. It is backwards and forwards compatible with
v0.9.0.
The bugs fixed are:
* Customized .psqlrc files no longer break WAL-E (Feike Steenbergen)
* ``statement_timeout`` suppression should work now (Anatolii Mihailenco)
* Files unlinked during backup no longer cause a crash (Léo Cavaillé)