1. Re-enable DTD validation once
   https://github.com/UweSchmidt/hxt/issues/15 is fixed.

2. Write a test for test/xml/Odds_XML-long-import.xml once it no
   longer takes 10 minutes to import (Postgres only?).

3. Add support the the second type of weatherxml (see man page).

4. We have DTDs but no sample XML for the following SportInfo types,
   which have therefore been left unimplmented for now:

   * Cbask_Indv_No_Avg_XML.dtd
   * Cbask_Indv_Shooting_XML.dtd
   * CBASK_StealsXML.dtd
   * Cbask_Team_Scoring_Rebound_Margin_XML.dtd
   * Cbask_Team_Scoring_XML.dtd
   * Cbask_Team_Shooting_Pct_XML.dtd
   * NFLGrassTurfDomeOutsideXML.dtd
   * NFLInterceptionLeadersXML.dtd
   * NFLPassingLeadersXML.dtd
   * NFLReceivingLeadersXML.dtd
   * NFLRushingLeadersXML.dtd
   * NFLTackleFFLeadersXML.dtd
   * NFLTopKickoffReturnXML.dtd
   * NFLTopPuntReturnXML.dtd
   * NFLYardsXML.dtd
   * NFL_PuntingLeaders_XML.dtd

5. The following DTD types were handled (in some form) by the old
   FeedGrabber. They are not yet handled by htsn-import (some may not
   be valid):

   * AutoRacingDriverList
   * AutoRacingGridXML
   * CBASK_Individual_Stats_XML
   * Cbask_Roster_XML
   * cbaskteamschedulexml
   * CBATeamScheduleXML
   * CFLTeamScheduleXML
   * CFLTotalTeamScheduleXML
   * earlylineXML
   * Minor_Baseball_TeamScheduleXML
   * MinorLeagueHockeyTeamScheduleXML
   * MLB_Boxscore_XML
   * MLB_earlylineXML
   * MLB_IndividualStats_XML
   * MLB_Probable_Pitchers_XML
   * MLB_Roster_XML
   * mlbteamschedulexml
   * mlsteamschedulexml
   * NBA_Boxscore_XML
   * NBA_Individual_Stats_XML
   * NBA_Roster_XML
   * nbateamschedulexml
   * NCAA_Basketball_Boxscore_XML
   * NCAA_FB_TeamScheduleXML
   * NCAAHockeyTeamScheduleXML
   * NFL_Boxscore_XML
   * NFL_CompBox_XML
   * nfldepthchartxml
   * nflteamschedulexml
   * nhlteamschedulexml
   * WCBaskTeamScheduleXML
   * WNBA_Boxscore_XML
   * WNBA_Individual_Stats_XML
   * WNBATeamScheduleXML

6. Consolidate all of the make_game_time functions which take a
   date/time and produce a combined time.

7. Move the News/Scores Locations into TSN.Locations.

8. Regenerate the News/Scores dbschema diagrams.

9. Re-test import of News/Scores samples.