the first kivy ui is completed
the problem of fonts is solved
use new UI and enable Lenvenshtein distance
can now pause on mobile phones
solve space problem on android
can now run with original kivy launcher rather than qpython
can now run on linux without DroidSansFallback.ttf
text_output is readonly now
Can now run well as an independent app on Android

Use Kivy's Python-for-Android to build it ~
main.py can run with python3 now
show version  on android
adjust ui
can now use slider to scroll the text ~_~
improve efficiency
effeciency improve again
little improvement
improvement on accurate_search