update version to 1.0

bump version to .4, fix tabs in setup documentation, add readmes to t…

…he samples that link to the documentation website.

Refactor to make the saved state flow more testable (#4)

* refactor gradle dependencies version to root gradle, start writing the test for viewmodel

* create a wrapper around saved state handle so that flows could be easily mocked

* write one test with the stateflow handle

* add a coroutines test rule and add one more test when cached value exists

* create a test module with TestSavedStateFlow

* update publish script to also run on test module

* extract android sdks and publishing attributes to root gradle, remove the support arch lifecycle testing dependency

* make this an alpha version

Publish library to maven central ci/cd (#3)

* successful build and upload of artifact to nexus central repository

* update readme

* add a workflow

* update publish version as a test