Patch note history by hero and battleground for Heroes of the Storm. Patch notes are linked based on hero names, abilities, and talents. What is this?

Last 3 Patches
2020-09-08 Patch Notes v 2.52.0
2020-08-31 PTR Patch Notes v 2.52.0
2020-08-19 Balance Update v 2.51.2
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Heroes

Hero Last Balance Δ First Released
Alarak 2020-09-08 2016-09-13
Cassia 2020-09-08 2017-04-04
Chromie 2020-09-08 2016-05-17
D.Va 2020-09-08 2017-05-16
Deckard 2020-09-08 2018-04-24
E.T.C. 2020-09-08 2014-03-13
Gazlowe 2020-09-08 2014-03-13
Imperius 2020-09-08 2019-01-08
Orphea 2020-09-08 2018-11-13
Stitches 2020-09-08 2014-03-13
Tassadar 2020-09-08 2014-03-13
Yrel 2020-09-08 2018-06-12
Anub'arak 2020-08-19 2014-10-07
Arthas 2020-08-19 2014-03-13
Blaze 2020-08-19 2018-01-09
Chen 2020-08-19 2014-09-10
Deathwing 2020-08-19 2019-12-03
Illidan 2020-08-19 2014-03-13
Junkrat 2020-08-19 2017-10-17
Mei 2020-08-19 2020-06-23
Muradin 2020-08-19 2014-03-13
Qhira 2020-08-19 2019-08-06
Tyrande 2020-08-19 2014-03-13
Uther 2020-08-19 2014-03-13
Zeratul 2020-08-19 2014-03-13
Zul'jin 2020-08-19 2017-01-04
Cho 2020-07-15 2015-11-17
Diablo 2020-07-15 2014-03-13
Gall 2020-07-15 2015-11-17
Garrosh 2020-07-15 2017-08-08
Greymane 2020-07-15 2016-01-12
Johanna 2020-07-15 2015-06-02
Kharazim 2020-07-15 2015-08-18
Lt. Morales 2020-07-15 2015-10-06
Maiev 2020-07-15 2018-02-06
Mal'Ganis 2020-07-15 2018-10-16
Mephisto 2020-07-15 2018-09-04
Rehgar 2020-07-15 2014-07-23
Tychus 2020-07-15 2014-03-18
Xul 2020-07-15 2016-03-01
Murky 2020-06-23 2014-05-22
Genji 2020-06-03 2017-04-25
Gul'dan 2020-06-03 2016-07-12
Hanzo 2020-06-03 2017-12-12
Raynor 2020-06-03 2014-03-13
The Lost Vikings 2020-06-03 2015-02-10
Tracer 2020-06-03 2016-04-19
Tyrael 2020-06-03 2014-03-13
Whitemane 2020-06-03 2018-08-07
Zagara 2020-06-03 2014-06-25
Anduin 2020-05-06 2019-04-30
Artanis 2020-05-06 2015-10-20
Brightwing 2020-05-06 2014-04-15
Dehaka 2020-05-06 2016-03-29
Jaina 2020-05-06 2014-12-02
Li-Ming 2020-05-06 2016-02-02
Probius 2020-05-06 2017-03-14
Ragnaros 2020-05-06 2016-12-14
Butcher 2020-03-11 2015-06-30
Kerrigan 2020-03-11 2014-03-13
Rexxar 2020-03-11 2015-09-08
Samuro 2020-03-11 2016-10-18
Stukov 2020-03-11 2017-07-11
Abathur 2020-02-12 2014-03-13
Auriel 2020-02-12 2016-08-09
Azmodan 2020-02-12 2014-10-07
Fenix 2020-02-12 2018-03-27
Malfurion 2020-02-12 2014-03-13
Malthael 2020-02-12 2017-06-13
Sgt. Hammer 2020-02-12 2014-03-13
Zarya 2020-02-12 2016-09-27
Nazeebo 2020-01-22 2014-03-13
Thrall 2020-01-22 2015-01-13
Varian 2019-12-16 2016-11-15
Alexstrasza 2019-11-22 2017-11-14
Falstad 2019-11-22 2014-03-13
Kel'Thuzad 2019-11-22 2017-09-05
Leoric 2019-11-22 2015-07-21
Lunara 2019-11-22 2015-12-15
Sonya 2019-11-22 2014-03-13
Ana 2019-10-15 2017-09-26
Li Li 2019-10-15 2014-04-15
Medivh 2019-08-28 2016-06-14
Valla 2019-08-28 2014-03-13
Valeera 2019-07-10 2017-01-24
Sylvanas 2019-05-22 2015-03-24
Lucio 2019-04-17 2017-02-14
Nova 2019-01-23 2014-03-13
Kael'thas 2018-11-13 2015-05-12

Battlegrounds

Battleground Last Balance Δ First Released
Alterac Pass 2020-06-23 2018-06-12
Battlefield of Eternity 2020-06-23 2015-06-30
Blackheart's Bay 2020-06-23 2014-03-13
Braxis Holdout 2020-06-23 2016-09-13
Cursed Hollow 2020-06-23 2014-03-13
Dragon Shire 2020-06-23 2014-03-13
Garden of Terror 2020-06-23 2014-07-23
Hanamura 2020-06-23 2017-04-25
Haunted Mines 2020-06-23 2014-03-13
Infernal Shrines 2020-06-23 2015-08-26
Lost Cavern 2020-06-23 2016-03-29
Sky Temple 2020-06-23 2015-01-13
Tomb of the Spider Queen 2020-06-23 2015-03-24
Towers of Doom 2020-06-23 2015-11-17
Volskaya Foundry 2020-06-23 2017-09-26
Warhead Junction 2020-06-23 2016-09-27