Tweak token name in command editor
Add auto completion of close bracket and quotation mark

and prepare to refactor codes
Improve text editor

Delete indentations of next line when inputted backspace key at the beginning of a line (or delete key at the end of line)
Insert blank line when start a new line at before close bracket
Reformat the indentation of the block when inputted close bracket
If input quotes or brackets while selecting text, enclose selected texts (optional)