Revert "update compat (#515)"

This reverts commit 729f059.

Author: BeastyBlacksmith

Project.toml

@@ -38,9 +38,9 @@ CSV = "0.10"
 DataFrames = "1"
 IJulia = "1"
 JSExpr = "0.5, 1"
-JSON = "0.20, 0.21, 1"
+JSON = "0.20, 0.21"
 JSON3 = "1"
-PlotlyBase = "0.8.23"
+PlotlyBase = "0.8.15"
 PlotlyKaleido = "2.2.5"
 Reexport = "0.2, 1"
 Requires = "1.0"