chore(tests): Add "testw" script
chore(tests): Add "testw" script

Add "testw" script that that automatically runs tests when source is updated.

aloisdg/base16-builder,base16-builder/base16-builder,base16-builder/base16-builder,aloisdg/base16-builder,aloisdg/base16-builder,base16-builder/base16-builder