D-2

v-2.0
---
1. refactor

	==> done
D-2

v-2.1
---
1. new: func
        crossOver(bits, bits, point) :: ret = Object[]

	==> done
D-2

v-2.2
---
1. get an offspring pair genes from a Pair

	==> done
D-2

v-2.3
---
1. get 4 offspring pairs from the 4 forespring pairs
	=> put the new 4 into a Generation
		(a Generation that has 8 genes)

	==> done
D-2

v-2.4
---
1. get an offspring generation from the forespring generation

	==> done
Merge branch 'D-2_initial-coding_Kodaka.208'