presenter v0.4.0

[LogCreative]

presenter v0.4.0 mainly abstract more interfaces and introduce new features:

• fixes dual foreground style by abandon the legacy mark usage.
• new cascade foreground style to display all levels of parent titles.
• abstract the sectioning mechanism in the new package pretsec, rename some internal variables and functions.
• l3block background style is now iiiblock, the template code in docstrip is now seperated from block to avoid variable re-declaration issue.

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This discussion was created from the release presenter v0.4.0.