Fix strain from frame files not resampled

• Closed #704 (closed)
• Return the resampled strain directly instead of the original strain object

mentioned in issue #704 (closed)

approved this merge request

added 2 commits

• 3ff8798d - 1 commit from branch lscsoft:master
• b3d863ad - Return resample strain directly.

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approved this merge request

added <10 lines Bug labels

merged

Thanks @samson.leong!

changed milestone to %2.2.1

mentioned in merge request !1305 (merged)