Revert "Downgrade underscore.string to 3.1.x" and update to v3.2.2
Revert "Downgrade underscore.string to 3.1.x" and update to v3.2.2

This reverts commit eccfa610743e0b3394a251a93cc4b8a7a50f2d29.

No need for this, since https://github.com/epeli/underscore.string/pull/448 has been merged.

ericmann/generator-reveal,janraasch/generator-reveal,cbourgois/generator-reveal,riezebosch/generator-reveal-infosupport,riezebosch/generator-reveal-infosupport,janraasch/generator-reveal,ericmann/generator-reveal,cbourgois/generator-reveal,slara/generator-reveal,slara/generator-reveal