created NiconicoWebTextSegment
changed class name
created PlainNiconicoWebTextSegment
created FontElementSize
changed class name to PlainNiconicoWebTextSegmentBase
modified comments
created IGeneralNiconicoWebTextSegment
deleted IGeneralNiconicoWebTextSegment
created NiconicoWebTextSegmentNumberAnchorRange
changed struct name to NiconicoWebTextNumberAnchorRange
implemented number anchor
modified comment
implemented PlainNiconicoWebTextSegment
created PlainNiconicoWebTextSegmentWithUrlBase
created IdNiconicoWebTextSEgmentBase
implemented IdNiconicoWebTextSEgmentBase
changed class name
created VideoIdNiconicoTextSegment
created NiconicoTextUrlUtils
chnage class name