Pikhq

0.0.0.0>++++++=^               =v ^.>++==^                 ==v ^+.+++++++..+++.>>++++++++===^       ===v ^.<++++++++.--------.+++.------.--------.>>++====^          ====v ^.>++++++++++.X
1.0.0.0        _                _ _
2.0.0.0        ^<++++++++++++>-=v<v
0.1.0.0                                  _                   _ _
0.2.0.0                                  _                   _ _
0.3.0.0                                  ^<++++++++++++++>-==v<v
0.0.1.0                                                                                     _          _ _
0.0.2.0                                                                                     _          _ _
0.0.3.0          This program outputs "Hello, World."                                       _          _ _
0.0.4.0          It takes some advantage of dimensionality;                                 ^<++++>-===v<v
0.0.0.1          the code is in 5 dimensions.                                                                                                             _              _ _
0.0.0.2                                                                                                                                                   _              _ _
0.0.0.3          Copyright (c) 2006 Josiah Worcester,                                                                                                     _              _ _
0.0.0.4          Licensed under the GPL.                                                                                                                  _              _ _
0.0.0.5                                                                                                                                                   ^<+++++++>-====v<v