[algorithm.binary_search] Use comp parameter for lower_bound.
[algorithm.count] Reduce inner function parameter.
[algorithm.count_if] Reduce inner function parameter.
Merge pull request #34 from kariya-mitsuru/binary_search

[algorithm.binary_search] Use comp parameter for lower_bound.
Merge pull request #35 from kariya-mitsuru/count

[algorithm.count] Reduce inner function parameter.
Merge pull request #36 from kariya-mitsuru/count_if

[algorithm.count_if] Reduce inner function parameter.