2.7.1

synchronized a class feature

2.7.0

try throwable

2.6.5

锁优化，避免极端条件下class对象引起的死锁

2.6.0

对象放入map前，调用onCreate

2.5.0

修复并发导致的崩溃问题

2.4.0

synchronized a class feature

2.3.5

synchronized a class feature

2.3.2

double lock check

2.3.0

merge from develop

2.2.0

merge from develop