This bill is not done.
It passed on to the Rules Committee today according to the Washington State Legislature website. Looks like it passed along unanimous party lines (imagine that), with Dems outnumbering Republicans.
I also heard rumors that if it does not advance further, the author/co-author Sen Frockt from the 46th district (North Seattle, of course) is planning to throw it up for a last minute voice vote next week. In addition, if that fails, they plan to go for the voter initiative.
Keep your powder dry and contact your state representatives.