bump version number to 0.9.0

Merge pull request Megabit#757 from stsrki/release-preps-090

Release preps for v0.9.0

bump version number 0.9.0-preview2

docs: fix typo in release notes

bump: version number 0.8.3

bump version number to 0.8.2 in props file

docs: changed release notes url

Merge pull request Megabit#107 from stsrki/dev076

Dev076

Merge pull request Megabit#105 from stsrki/dev075

Dev075

fix: eFrolic demo link