rThunk in thunk-reducer

Merge pull request #51 from chhsiao1981/release-2.1.3

update version to 2.1.3

update packages to newest version

1. remove react-hook-thunk-reducer

refine types

#44

• refine types

#45

• add codecov

add more helping functions.

#41

• get states.

#43

• update index.d.ts

tests as ts

#39

• tests as ts

add generic type

#36

• add generic type

reduceMap in createReducer can be undefined

#34

• more tests
• reduceMap in createReducer can be undefined

rewrite with typescript

#32

• rewrite with typescript

init type

#30

• init type

reducer in useActionDispatchReducer

#28

• reducer in useActionDispatchReducer