osam 2.0.3

State management library

2.0.1 17 nov 2019 16.59

*0.0.1 start osam ent

*0.0.2 edited event

*0.0.5 edited property stream

*1.0.0 refactored middleware

*1.1.1 edited example

*1.2.0 property stream to mapper

*1.3.0 added natty event

*1.3.4 edited presenter

*1.3.5 edited streams for type safety

*2.0.1 added null safety calls