<sub-title> heading is not used by Plex grid

[BEisem]

telly release with the issue: telly, version 1.5.0 (branch: HEAD, revision: d56d29269ca121a00d0cd2340b67be284a33f719) build user: root@873a25215547 build date: 20180916-04:00:37 go version: go1.10.3

Operating environment (Docker/Windows/Linux/QNAP, etc.): macOS

Description of problem: The xml generated by telly is using the <sub-title> heading for certain elements of listings. But unfortunately that heading does not seem to be used by Plex in any meaningful way. As a result, some listings appear incomplete in Plex even though the information is in the xml. A perfect example of this is college football listings.

Here is a listing for an upcoming game today (I removed the <icon src> lines in this example)

<programme id="EP029941830524" start="20180924063000 +0000" stop="20180924080000 +0000" channel="55">
        <title>College Football</title>
        <sub-title>Florida Atlantic at Central Florida</sub-title>
        <desc lang="en">From Spectrum Stadium in Orlando, Fla.</desc>
        <desc lang="en">From Spectrum Stadium.</desc>
        <category>Football</category>
        <category>Sports</category>
        <language lang="en">en</language>
        <length units="seconds">5400</length>

        <episode-num system="dd_progid">EP029941830524</episode-num>
    </programme>

The teams playing are listed in the <sub-title> heading. But when this is viewed in the Plex guide, this information does not appear.

I'm sure there are other examples of this, but right now this is the most problematic.

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[BEisem]

Not stale! Definitely needs to be fixed!