popup: remake offsets param, add ability to have a offset from the window (close #410)
Merge pull request #411 from bem/issues/410@v2

popup: remake offsets param, add ability to have a offset from the window (close #410)
button_type_radio: не сбрасывается _focused (close #412)
Merge pull request #413 from bem/issues/412@v2

button_type_radio: не сбрасывается _focused (close #412)
refactoring
popup: border => box-shadow
input: border => box-shadow
button: border => box-shadow
checkbox: border => box-shadow