add ggraph fix to news

r-causal · Sep 12, 2019 · db88d45 · db88d45
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 # ggdag 0.2.0
+* Fixed compatibility issue with ggraph 2.0.0 by changing to `strength` parameter in curved geoms
 * Fixed join bug in `node_equivalent_class()` that didn't account for the way dagitty returns DAGs with no direction
 * Fixed join bug in `node_equivalent_class()` that didn't check `to` node
 * Implemented `is_false()` to avoid dependency on R 3.5.0