0.26.0

Released: 2018-06-28.

• ⚠️ breaking split into many packages (#906 / @goto-bus-stop, @arturi)
• xhr-upload: Add withCredentials option (#874 / @tuoxiansp)
• utils: Move single-use utils into their appropriate packages. (#926 / @goto-bus-stop)
• core: Export Plugin class from @uppy/core (#924 / @goto-bus-stop)
• Typescript typings improvements (#923 / @goto-bus-stop)
• core: change focus to solid line for all elements (ade214e5aab822e1fc3ab8e0fac80c4fc04d7bc3 / @arturi)
• dashboard: fix Dashboards tabs overflow by adding scroll; improve scroll (b974244c7f4e01adcf2478b7f651dada63d342f1 / @arturi)