V1.6 (2018.12.21)
1. Full support for version 7.20.
2. Fixed several bugs.
3. Refactor some of the code to improve efficiency and reduce the possibility of errors.

Fixed unlimited purchasing of TP

Temp Version (commited by maltose)
1. Update all hero item building to the latest version 7.20.

The other gameplay changes are still under development.

V1.5h(2018.10.4)
1. Update all hero talent building and ability building to the latest version.

Fixed Crystal maiden's bug that she can not learn talents after level 15.

Fixed Arc warden's bug that his illusion can use ultimate ability.

V1.5g (2018.6.6)
1. Fixes the issue that Dazzle is not able to use 3rd ability shadow waves at times.
2. Fixed the issue that Broodmother, Earth spirit, Faceless void, Slark sometimes stuck in the woods.
3. Fixed the issue that prophets could not use 1st ability and 4nd ability.
4. Fixed the issue that the illusions of some heroes (Arc warden) would buy back.
5. Fixed a problem where kunkka may not be able to use abilities.
6. Fixed possible problems with Naga siren.
7. Fixed the issue that the Timber could not use skills
8. Fixed the issue that the Templar Assassins could not use the ultimate ability.
9. Try to fix the problem that Troll warlord will not be able to use abilities properly.
10. Optimize the useage of Weaver's ultimate ability, and now it will use this ability to offset a lot of damage.
11. Fixed the problem of bristleback can not purchasing items.
12. Add Invoker's position to the middle to fix the problem.
13. Now AI will buy more TP and dust.

v1.5f(2018.5.19) commit by zmcmcc
1. Added new heroes Tusk, Shredder and Furion.
2. Optimized ability usage of TA, QoP, Underlord, Disruptor, Wind Runner, Sniper, NA and Drow Ranger.
3. FIxed some bugs.
4. Updated v7.15 bounty runes.

v1.5e added four heroes and other updates.
1. Added new hero Phantom Lancer, Troll Warlord and Nyx assassin. For now NA cannot use burrow.
2. Kunkka is back with better ability use(not perfect though).
3. Temporarily removed Tiny due to his third skill bugs.
4. Optimized ability usage of Centaur, Disruptor, Bristleback, Winter wyvern, Weaver, TA, Medusa, wind runner, Antimage, QoP, batrider, skeleton King, OD, bounty hunter and brewmaster.
5. Optimized the usage of magic stick，wand and bottle.
6. Further optimized the usage of stomp-like abilities. Now enemies' movement speed and cast delay will be better considered.
7. Added judgement of whether stuck on cliff for broodmother, slark and earth spirit.
8. Fixed some bugs caused by v7.14.

Fixed some bugs about hero skill usage