* init
* add RETRO_TAP; tap anyway after TAP_TERM, if no interruption
* RETRO_TAP works for other types of taps
* revert to upstream/master
* explain this fork in readme
* use one readme.md file instaed
* fix the error if NO_ACTION_ONESHOT is defined
* restore readme.md to upstream master
Co-authored-by: Tsan-Kuang Lee <tsan.kuang.lee@gmail.com>