Move and update migration notes
Move and update migration notes

coliff/bootstrap,m5o/bootstrap,inway/bootstrap,twbs/bootstrap,coliff/bootstrap,tjkohli/bootstrap,twbs/bootstrap,tjkohli/bootstrap,GerHobbelt/bootstrap,m5o/bootstrap,GerHobbelt/bootstrap,inway/bootstrap,inway/bootstrap,GerHobbelt/bootstrap