Added peek and unsetting prescalers at ignore#26

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SRGDamia1 wants to merge 2 commits intoSlashDevin:masterfrom

SRGDamia1:devin

Commits on May 18, 2018

Added peak and unsetting prescalers at ignore
SRGDamia1
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Commits on May 21, 2018

Fixed head/tail in peek, cleaned comments
SRGDamia1
committed