New button and command components.
Adding my base command for when authorization is required.
Fixes to work with streamhub-input.
Add buttons programatically to each content source view
Add extended HubButton. Move default buttons of like/reply/share into ContentView
Hide reply button for now. Fix positioning of like button icon
Add like button. Add test for checking that Like button only appears on non-Twitter content items
Add tests for lazily adding contentLike.hub event listener
Add HubToggleButton for like button. Update StateToContent to handle v3.0-style opine.
Fix broken tests
Move programmatic button creation into LivefyreContentView
Add Liker to submit like/unlike requests. Handle streaming like/unlike.
Update spec-list to include tests for livefyre-content-view
Hint'd fixes
Fix typo
Fix broken test
HubButton supports buttonUrl option to make anchor tag for btuton
Liker accepts optional write client as opt.
Remove 'view' module resolution
Remove duplicate package definition for 'streamhub-sdk/ui/button' and 'streamhub-sdk/ui/command'