Speed up request for plain string data

[terma]

from

byMultipleString    10000000  avgt    5  1523.173 ±  80.155  ms/op
byString            10000000  avgt    5   612.183 ±  72.304  ms/op
byNoCaseLikeString  10000000  avgt    5  2851.732 ± 154.023  ms/op

to

byMultipleString    10000000  avgt    5    18.097 ±   1.792  ms/op
byString            10000000  avgt    5    12.916 ±   6.011  ms/op
byNoCaseLikeString  10000000  avgt    5    96.600 ±   4.065  ms/op (only for latin)

[coveralls]

Changes Unknown when pulling ef5f009 on speed-up-string-request into * on master*.

[coveralls]

Changes Unknown when pulling ab6e487 on speed-up-string-request into * on master*.