* Implemented Eager Per Row debouncing algorithm.
Good for when fingers can only press one row at a time (e.g. when keyboard is wired so that "rows" are vertical)
* Added documentation for eager_pr
* Ported ergodox_ez to eager_pr debouncing.
* Removed check for changes in matrix_scan.
* Added further clarification in docs.
* Accidental merge with ergodox_ez
* Small cleanup in eager_pr
* Forgot to debounce_init - this would probably cause seg-faults.
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