* The bats test script was moved to the apitest subproject and renamed.
* Version tests were updated for release 1.3.7.
* The duplicated "test getoffers buy eur check return status" was
replaced by a new "test getoffers sell eur check return status" test.
* The bats dependency was switched to bats-core because development
has halted on https://github.com/sstephenson/bats/tree/master.
The new bats repository is
https://github.com/bats-core/bats-core/tree/master
