Rename ol3Logo to logo in map options
Allow string & object to be passed as map logo
Uncollapse when there’s only logos
Fixes wording in comments
Set type=button to avoid forms submit
Add link support for source logos
Wording in docs
More complete doc for `logo` option
Type check with `olx.LogoOptions`
Merge pull request #2413 from tonio/logos

Revisit Logos