Mary Ann Azevedo / Crunchbase News: RigUp, a marketplace for on-demand services and skilled labor in the energy industry, raises $300M Series D led by a16z, report says at a valuation of $1.9B  —  Austin is hot this month, and we're not just talking about the temperature.  —  Two days ago, we wrote about AI startup SparkCognition's $100 million Series C.