SpaDES: v1.2.0

Known issues: https://github.com/PredictiveEcology/SpaDES/issues fix bug associated with forthcoming dplyr update remove gtools and secr from Imports spread enhancements: circular spreading, landscape-based functions, allow overlapping events enhancements to cir and bug fix (#290) new function rings whose argument names closer match to cir performance enhancements in spread, rings, cir add cache and progress args to spades and experiment functions Plot now clips symbols (generally points) to plotting area. This will allow future "wiping" of plot area. dev() returns dev.cur invisibly, allowing for finer control of plotting devices add distanceFromEachPoint, a multipoint version of raster::distanceFromPoints improve splitRaster (#276, #284) new function mergeRaster (#282, #283) changed and performance boost to randomPolygons (uses spread internally now) minor performance enhancements many more and improved unit test