make a new repository.
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:quit
::
deleted comments that are no longer needed
stdafx is no longer used
removed non-efficient methods (expand_white/black_old, expand_white)
moved source files
added .gitignore
make a frontend for pencilbox
update PencilBox-frontend
moved source files
delete unnecessary (old) frontend
optimize the strategy of trial-and-error
update solver and support more profound analysis in PencilBox frontend
manage vcxproj files in git
Add ToOther solution target.
Fit for GCC.
Merge branch 'for_gcc' of https://github.com/snukent/nurikabe into devel

Conflicts:
	src/core/solver.cpp
	src/frontend/pb_frontend.cpp
	src/util/util.cpp