allow go back to previous page by "="
no beep on dot
Cleanup updateWindow as it is not needed
Press clear to clear input; only take input of / and = if there are input buffer
Do not beep in case where no need (e.g. when no input and no output); do not allow enter more than 6 input
bump version - 0.2.0
add spec on BSMInputMethodController behavior
extract the beep so that we can mute it later
fix a bug that 8 and 9 selection is not working
Refactor: rename selectFirstMatch to selectFirstCandidate
allow toggling of input code
add * as wildcard in engine
support basic wildcard
Revise searching such that, enter 325*2 should not match 3252
Add word frequency

improve search result on wildcard match by using word frequency table
cache db query
revise readme
do not log to file
do not hide result table if no match and press enter
update readme