additional keys support

added %, k, M support:
% - works as in usual calc
k, K - multiplies current input by 1,000
m, M - multiplies current input by 1,000,000
FIX: merged the 2 blur

in previous commit %, k, M support was added
this bug was committed too
FIX: for values over 1m

FIX: for values over 1m on Tab, blur etc.
Revert "FIX: for values over 1m"

This reverts commit da732cea67795f23072b0c94fc350f668251b796.
FIX: for values over 1m

FIX: for values over 1m when press Tab, blur etc.
Merge pull request #3 from skush/master

additional keys support