Clear trim handles if trim cannot be completed.

Update scratch-l10n to the latest version 

Update scratch-vm to the latest version 

There was a useability issue discovered in testing where trying to trim a sound to be of zero length would fail, but just leave the trimmers active. Clear them out, since the trim is invalid

Remove vernier kludge

This reverts commit 68af0af2, reversing
changes made to 3fe75020.

This reverts commit 512915b7.

Build vernier module using babel preset to make sure it works for www

Update scratch-render to the latest version 

chore(package): update scratch-blocks to version 0.1.0-prerelease.154…

chore(package): update scratch-vm to version 0.2.0-prerelease.2019011…

Prevent creating sounds that are too big in the sound editor

Fix sound recorder issues

Update scratch-blocks to the latest version 

Closes #4347

Closes #4349

Update scratch-paint to the latest version 

Update scratch-audio to the latest version 

Update scratch-l10n to the latest version 

chore(package): update scratch-vm to version 0.2.0-prerelease.2019011…

Closes #4316

On slow machines it was possible to double click record before the chunk of samples had been processed, causing zero-length audio buffers

Allow putting mp3 sounds in the backpack.