Redo of jitteriness and dizziness.
Fixes #2923
Woops fucked up Tourette's
Also screwed up an examine bit.
Adds a Dissonant Shriek power for changelings that causes an EMP.
Merge pull request #2964 from Miauw62/praisethehelixfossil

Adds a Dissonant Shriek power for changelings that causes an EMP.
Updates changelog for dissonant shriek
Revert "Increases ore spawn rates by popular demand."

This reverts commit a87cc69a3163278dc93dfbceacc2a14485e808f3.
Merge pull request #2936 from MrPerson/jitterbug_dizzydummies

Redo of jitteriness and dizziness.
Merge pull request #2975 from Miauw62/changelog2

Changelog for Dissonant Shriek