This version fixes an important issue from 1.7:

• following the change in 1.7 which allowed results to be displayed as soon as computed on the console, there was no more guarantee that steps would execute stricly after the preceding group of examples

There are a few improvements:

• the org.specs2.time.Duration class is made public to get a better control over time implicits
• there is a new beSorted matcher for sequences
• [experimental] new Analysis trait to specify expected dependencies between the project packages

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