Version 0.9.9:
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* General:
  * Removed Wesnoth development versions warning from the campaign menu entries
    as support for 1.11.8 and later is now mature.
  * New complete algorithm for calculating the relative direction between two
    hex grid locations, handling all six intrinsic facing directions instead
    of only SW and SE.
  * Updated Aragwaith faction from Era of Chaos 1.3.1+dev up to commit
    9dedeba7cddc2a027745c9994a917fdcb78ed341.
  * Stripped optional whitespace from terrain map and mask files, decreasing
    uncompressed directory size by about 62%.

* Graphics:
  * New or updated unit graphics: Blood Core, multiple Aragwaith units, Demon
    Grunt.
  * Assigned a more dignified generic portrait to Cron (1.11.x only).

* Music and sound effects:
  * Mitigated `[fade_out_music]` causing a portion of the previous track to be
    heard at full volume at the end of the fade-out sequence. It still won't
    help in all cases.

* Scenarios:
  * Fixed additional bugs with hero ellipses on Wesnoth 1.11.6 and later
    affecting Anya on every scenario and Durvan on scenario E3S7B and later.
  * Use STARTING_VILLAGES_ALL instead of STARTING_VILLAGES with large numbers
    to assign all villages to sides.
  * Skip inclusion of death events for characters that are not present during
    the first few scenarios of E1.
  * E1S3 - Civil War in the North:
    * Fixed the first defined on-map unit (usually Galas) becoming permanently
      invisible.
    * Minor prose tweaks.
  * E1S4 - Terror at Dusk:
    * Balancing changes to make the scenario easier on Wesnoth 1.11.7 and
      later, possibly connected to the new AI recruitment gold saving aspect
      introduced in Wesnoth 1.11.7 and enabled by default.
    * Minor prose tweaks.
  * E1S5 - Bay of Tirigaz:
    * Made it so Mal Keshar speaks for bat units when investigating shipwrecks.
    * Minor map tweaks.
    * Minor prose tweaks.
  * E1S6.1 - Quenoth Isle:
    * Fixed Elynia's ellipse reverting to a generic unit ellipse on 1.11.x
      during the faerie fire cutscene.
    * Not-so-minor prose tweaks.
  * E1S6.2 - Elves of a Different Land:
    * Not-so-minor prose tweaks.
    * Extended map for large screens.
  * E1S7 - The Search for the Past:
    * Improved ending cutscene transition.
    * Minor AI adjustments to make the undead minions recruit correctly on
      Wesnoth 1.11.7 and later.
    * Not-so-minor prose tweaks.
  * E1S7x - Resolutions:
    * Minor map tweaks.
    * Not-so-minor prose tweaks.
  * E1S8 - Fear:
    * Not-so-minor prose tweaks.
  * E1S9.1, E1S9.2, E1S9.3 - The Triad:
    * Not-so-minor prose tweaks.
    * Various cutscene improvements and changes.
  * E1S10 - Tears:
    * Minor prose tweaks.
  * E1S11.1 - Return to Wesmere, part 1:
    * Not-so-minor prose tweaks.
  * E1S11.2 - Return to Wesmere, part 2:
    * Fixed story text not appearing because of a missing macro inclusion
      (long-standing bug that's existed ever since the scenario was first
      released).
    * Minor map tweaks.
    * Minor prose tweaks.
  * E1S12 - The Queen:
    * Balancing changes.
    * Excluded time area for the E1S11.2 starting area on Wesnoth 1.11.7 and
      earlier (including 1.10.x) due to a bug with time area ids not being
      saved, resulting in a time area with local lighting that interfers with a
      cutscene sequence after reloading from a non-start-of-scenario save.
    * Fixed long-standing offset-by-one bug with a terrain mask applied near
      the end.
    * Minor map tweaks.
    * Not-so-minor prose tweaks.
    * Various cutscene improvements and changes.
  * E1S13 - Death and Rebirth:
    * Minor cutscene improvements and changes.
  * E2S1 - By the Moonlight:
    * Minor AI adjustments for Wesnoth 1.11.7 and later.
    * Not-so-minor prose tweaks.
    * Now the scenario lives up to its name.
  * E2S2 - The Heart Forest:
    * Fixed fog not being cleared correctly when Allyna first appears.
    * Made it so Allyna introduces herself once three of the five bandits have
      been killed rather than all of them.
    * Minor AI adjustments for Wesnoth 1.11.7 and later.
    * Minor prose tweaks.
  * E2S3.1 - Unrest in Raelthyn:
    * Minor prose tweaks.
  * E2S3.2 - Revelations:
    * Minor prose tweaks.
  * E2S4 - Shifting Allegiances:
    * Minor prose tweaks.
  * E2S5 - The Eastern Front:
    * Minor prose tweaks.
  * E2S6 - The Voyage Home:
    * Not-so-minor prose tweaks.
  * E2S7 - The Voyage Home:
    * Minor prose tweaks.
  * E2S8 - And then there was Chaos:
    * Minor AI adjustments for Wesnoth 1.11.7 and later.
    * Not-so-minor prose tweaks.
  * E2S9 - New Hive:
    * Minor prose tweaks.
  * E2S10 - The Betrayal:
    * Minor prose tweaks.
  * E2S11 - A Final Confrontation:
    * Maybe-minor prose tweaks.
    * Minor cutscene tweaks and improvements.
  * E2S12 - Fate:
    * Minor cutscene tweaks and improvements.
  * E3S0 - Opening (Within):
    * Minor cutscene tweaks and improvements.
  * E3S1 - Beyond her Smile (A Light in the Darkness):
    * Minor map tweaks.
    * Various cutscene improvements and changes.
  * E3S2.1 - Return to Raelthyn:
    * Minor map tweaks.
    * Increased initial gold supply for the second human player side.
  * E3S2.2 - Reckoning:
    * Minor prose tweaks.
  * E3S3 - Amidst the Ruins of Glamdrol:
    * Minor prose tweaks.
  * E3S4.1 - Outpost of Hell:
    * Minor prose tweaks.
  * E3S4.2 - Gateway:
    * Minor prose tweaks.
  * E3S5 - Pass of Sorrows:
    * Minor map tweaks.
    * Minor prose tweaks.
    * Minor ending cutscene improvements.
  * E3S6 - Divergence:
    * Minor prose tweaks.
  * E3S7A - Dark Fire:
    * Prevent crashing Wesnoth 1.11.8 due to a missing initial time of day
      (part 1 only).
    * Minor AI adjustments for Wesnoth 1.11.7 and later.
    * Minor map tweaks.
    * Minor prose tweaks.
  * E3S7B - Dark Sea:
    * Minor AI adjustments for Wesnoth 1.11.7 and later.
    * Minor prose tweaks.
  * E3S8A - Interim:
    * Prevent crashing Wesnoth 1.11.8 due to a missing initial time of day.
    * Minor cutscene improvements nobody could possibly notice.
    * Minor prose tweaks.
  * E3S8B - Destiny, part 1:
    * Minor aesthetic changes nobody could possibly notice.
    * Fixed parts of the map being unintentionally uncovered upon entering
      Hemérilyel's chamber.
    * Made Hemérilyel more aggressive towards the player on Wesnoth 1.11.2 and
      later.
  * E3S8C - Breakdown:
    * Minor AI adjustments for Wesnoth 1.11.7 and later.
    * Minor prose tweaks.
  * E3S8D - Destiny, part 2:
    * Minor prose tweaks.
  * E3S9 - Dark Depths:
    * Minor prose tweaks.
  * E3S10 - Blood:
    * Minor prose tweaks.
  * E3S11 - After the Storm:
    * Minor prose tweaks.
  * E3S12 - Destiny, part 3:
    * Minor prose tweaks.
  * E3S13 - Epilogue:
    * Minor prose tweaks.

* Units:
  * Balancing changes:
    * Imps are now immune to the plague weapon special.
    * The Protection ability affects own units of any lower level again instead
      of only level 0 and 1.
      * Affected units: Demoness Hellbent Tide, Aragwaith Shield Guard,
        Aragwaith Ancient Banner.
    * Physical endurance no longer resets statuses (poisoned, slowed, etc.).
    * Decreased Lumeril Glyph Mistress' arcane damage resistance from -10% to
      -20%.
    * Decreased Fallen Faerie's cold ranged attack strength from 11-3 to 10-3.
  * New or improved unit animations: Verlissh Matrix Core, Shaxthal Custodian
    Drone, Shaxthal Queen, Verlissh Matrix Flow System, Verlissh Control Spire,
    multiple Aragwaith units, Dusk Faerie line.
  * Made it so the Falcon unit type and the lightfly movetype are only defined
    if the mainline Khalifate faction is not present, by testing the existence
    of core/units/khalifate/Falcon.cfg.
  * Fixed a minor inaccuracy at the beginning of the Terror ability
    description.
  * The spawn controller code (used e.g. in Shaxthal hives) has been completely
    rewritten in Lua. No behavior changes expected.