Most of the time I read a new changelog it is something like this:

GAMEPLAY
- Added Reverse Captains Mode.
- Dark Seer: Fixed Wall of Replica illusion creation timing (affects instantly dying illusions mainly).
- Dragon Knight: Fixed Elder Dragon Form not splashing on siege units.
- Enchantress: Fixed being unable to be healed by Nature's Attendants if you are sleeping.
- Enchantress: Fixed Impetus not being castable on Magic Immune enemies (still does no damage if immune on impact).
- Gyrocopter: Homing Missile now starts 150 units in front him.
- Huskar: Fixed Life Break not properly dispelling buffs on you when cast.
- Lich: Fixed Chainfrost not working with Refresher.
- Phantom Lancer: Fixed not reproducing his abilities (including stat bonuses) correctly on his Dopplewalked illusion.
- Phantom Lancer: Fixed Dopplewalked illusions never Juxtaposing.
- Shadow Shaman: Fixed Mass Serpent Wards having no cast point.
- Silencer: Fixed Illusions stealing intelligence.
- Spiritbreaker: Fixed case where he could interrupt his Charge by previously having given an attack order to his target.
- Templar Assassin: Fixed Psionic Trap's nearby detonate ability not always working if the trap is too far.
- Undying: Zombies now correctly disable Blink Dagger.
- Venomancer: Fixed Poison Sting duration not increasing per level.
- Visage: Fixed Familiars agroing neutrals when flying over them.
- Wisp: Fixed his Spirits dying if he gets cycloned or purged.
- Wisp: Fixed Tether targeting magic immune allies.
- Witch Doctor: Fixed Paralyzing Casks not bouncing between Magic Immune enemies (doesn't stun them, but doesn't cause the bouncing to end prematurely).
- Witch Doctor: Fixed Death Ward not bouncing on magic immune enemies.
- Fixed heroes being able to get stuck on each other in rare cases.
- Fixed neutrals seeing and killing other sentry wards (as well as other non-attacking ward-type units).
- Fixed Arcane Boots and Mekansm being unable to affected allied invulnerable units.
- Fixed Orb of Venom doing lethal damage.
- Fixed Neutral Gnoll's poison attack doing lethal damage.
- Fixed Vladmir's Offering applying the aura when they owning unit is dead.
With no distinction between fixes, unimportant (to most i should say) changes (ie. adding 1 damage) and important change (changing the ulti of centaur).
Would it be possible to do some sort of summary of the important changes (what defines important will really only be controversial between people that read the entire changelog anyways), or perhaps just add another section called "Bugs" instead of having it all fit inside one section? Or if that isnt doable for some reason, then have the important changes be another colour?