rm whitney vars from core
forgot to define default stack
no transition by default
handle small modifiers on buttons
make spacing modifiers important
Revert "make spacing modifiers important"

This reverts commit 2c697cd265a6e79cae18e2fb5b79394fee9b1860.
Merge branch 'release_1.5.0' into whitney_specimen

Conflicts:
	_site/assets/css/sassquatch.css
	_site/assets/css/sassquatch_mobile.css
	_site/assets/css/sassquatch_tests.css
	css/sassquatch.css
	css/sassquatch_mobile.css
	jekyll_docs/assets/css/sassquatch.css
	jekyll_docs/assets/css/sassquatch_mobile.css
	jekyll_docs/assets/css/sassquatch_tests.css