Fix consolidation behavior when deleting the first or last character in a block and optimize for removing text from a single block
Fix consolidation behavior when deleting the first or last character in a block and optimize for removing text from a single block

basecamp/trix,basecamp/trix,ChenMichael/trix,GabiGrin/trix,basecamp/trix,GabiGrin/trix,ChenMichael/trix,GabiGrin/trix,urossmolnik/trix,urossmolnik/trix,urossmolnik/trix,ChenMichael/trix,basecamp/trix