v1.0.2

Fixed

• Item spends to start a round or reveal a clue's hint were recorded in PlayerHUD's ledger
  without attribution to PlayerCross, showing up in a student's history and reports as a
  generic transaction instead of tied to the activity.
• The PlayerHUD integration could throw a fatal error on a site running block_playerhud older
  than v1.7.1, instead of falling back to no integration as intended. The plugin's own settings
  page now also tells an outdated PlayerHUD apart from a missing one, pointing the admin at the
  real fix (upgrade the block) instead of a misleading "not installed" message.