InstallSystems Next Generation

INSTALLSYSTEMS VERSIONNING
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A valid version is an integer without dot.
A version n, may be followed by a ~, to indicate it's inferior to n
A version n, may be followed by a +, to indicate it's superior to n
Any following ascii chars after ~ or + are ignored

Examples:
  1 < 2
  2 > 2~dev
  2 < 2+dev
  2~dev < 2+dev


IMAGES VERSIONNING
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A valid version is an integer. Nothing more!