v0.4.30

• The "Monthly Flow per Segment" article is merged into "Stream Discharge per Segment", one article for the yearly, monthly and daily values (#149); the old address redirects to it. It opens with a province map of which source gives each river's default flow, scores routed PCIC and the held-out water balance on the same 279 gauges in one table (and the balance on all 315), shows both sources through the year at three Bulkley gauges with the chinook salmon life history timing windows, and says what reading a timing window from monthly means rather than the published days costs. Routed PCIC is described at a high level, with VIC-GL, Raven and the fwapg fork's notes cited, and every package the article uses is cited inline from vignettes/segment-discharge.bib. A build check for a claim the article no longer made is gone (#80).