twitter output, cron output bindings (dapr#1800)

upgrade component-contrib to 0.2.1 (dapr#1785)

Upgrade component contrib to v0.2.0 (dapr#1778)

Release note 0.8.0 (dapr#1671)

* initial commit for release note 0.8.0

* Added dapr runtime release notes

* Changed summary

* added

* wip

* wip

* fix components highlights

* fix apache pulsar typo

* Update pub/sub

* update bi-di bindings

* Update v0.8.0.md

* Phrasing fixes / Helm installation clarification

* Adding links to highlights section

* Update highlight links

* small phrasing changes

* Update v0.8.0.md

* Update v0.8.0.md

* Update v0.8.0.md

* Update v0.8.0.md

Co-authored-by: vinayada1 <[email protected]>
Co-authored-by: Yaron Schneider <[email protected]>
Co-authored-by: Ori Zohar <[email protected]>
Co-authored-by: Mukundan Sundararajan <[email protected]>
Co-authored-by: Mark Fussell <[email protected]>

Merge pull request dapr#1656 from vinayada1/components-rc-fix-dapr

Change default components folder used by runtime

Upgrade component-contrib to v0.1.0 (dapr#1654)

* upgrade component-contrib to v0.8.0

* change to v0.1.0

* go mod tidy