Remove 'EnumTag#parse'

It is not used by anyone.

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Fix DiskSessionStoreSpec

As the session does not use UTC, the specification should neither.

Signed-off-by: Jussi Virtanen <jussi.virtanen@valotrading.com>
Merge pull request #129 from jvirtanen/cleanups/enum-tag-parse

Remove 'EnumTag#parse'
Merge pull request #130 from jvirtanen/fixes/disk-session-store-spec

Fix DiskSessionStoreSpec