Reduce the supported "truthy" values.
Reduce the supported "truthy" values.

alabeduarte/flipper,gdavison/flipper,gdavison/flipper,gdavison/flipper,gdavison/flipper,carlthuringer/flipper,jnunemaker/flipper,carlthuringer/flipper,alabeduarte/flipper,jnunemaker/flipper,carlthuringer/flipper,alabeduarte/flipper,carlthuringer/flipper,jnunemaker/flipper,alabeduarte/flipper,jnunemaker/flipper