add tests for Rickshaw.Series.fill
add tests for Rickshaw.Series.fill

butterflyhug/rickshaw,IoTboy/rickshaw,RobertoMalatesta/rickshaw,JaySunSyn/rickshaw,toniher/rickshaw,xebitstudios/rickshaw,toniher/rickshaw,dwt/rickshaw,dpobel/rickshaw,pombredanne/rickshaw,dpobel/rickshaw,shutterstock/rickshaw,yaronn/rickshaw,toniher/rickshaw,xebitstudios/rickshaw,butterflyhug/rickshaw,butterflyhug/rickshaw,boomtrain/rickshaw,VividCortex/rickshaw,zhangweiabc/rickshaw,VividCortex/rickshaw,shutterstock/rickshaw,boomtrain/rickshaw,boomtrain/rickshaw,egorovpavel/rickshaw,pombredanne/rickshaw,pombredanne/rickshaw,mcanthony/rickshaw,adeelshahid/rickshaw,npmcomponent/cristiandouce-rickshaw,mcanthony/rickshaw,xebitstudios/rickshaw,npmcomponent/cristiandouce-rickshaw,openhose/rickshaw,IoTboy/rickshaw,RobertoMalatesta/rickshaw,JaySunSyn/rickshaw,dwt/rickshaw,adeelshahid/rickshaw,IoTboy/rickshaw,RobertoMalatesta/rickshaw,shutterstock/rickshaw,yaronn/rickshaw,mcanthony/rickshaw,openhose/rickshaw,egorovpavel/rickshaw,adeelshahid/rickshaw,dwt/rickshaw,zhangweiabc/rickshaw,openhose/rickshaw,egorovpavel/rickshaw,JaySunSyn/rickshaw,zhangweiabc/rickshaw,dpobel/rickshaw