Adust date in the changelog

Adust date in the changelog

Don't put the version for local dev-dependency

Otherwise we can't upload them to crate.io

Update documentation link for release

Adjust the URL in the documentation to the released version

sixtyfps-viewer: re-enable the x11 feature by default

Some change in the feature handling caused it not to enable x11 nor wayland

Add missing colon for simple input dialog eaxmple

Fix publishing

the testing backend is not on crates.io, so the dev-dependency must not
have a version field

Change the version number in docs-preview.html

Update some more version number

Meaning that following the docs or tutorial won't work until the release is complete