v1.2.8

FEATURE | Add solution to solve issue from this PR botman/web-widget#53 Iframe sandbox attributes
FIX | Add alt attribute as mentioned in this PR botman/web-widget#43

Full Changelog: v1.2.6...v1.2.8

v1.2.6

BUGFIX | Implement the bugfix of this PR botman/web-widget#39

Full Changelog: https://github.com/EranGrin/botman-extended-web-widget/commits/v1.2.6