checkbox.getValue() should return empty string for inpt without value
Merge pull request #162 from yandex-ui/checkbox-getvalue-without-attr

checkbox.getValue() should return empty string for inpt without value
adds overlay for static popup
Merge pull request #166 from vitkarpov/fix-modal-popup

Adds overlay for static popup
Merge pull request #165 from yandex-ui/input-change

#163 Событие change в блок input
Nanoblocks update. Destroy methods refactoring.
Popup refactoring
fix #160
Stylobate update
fix #161
Tests fix
Toggler focus/blur fixes
Progress fix
User fix
User fix
fix #133
Rebase master