Update Project.toml

Author: MikaelSlevinsky

Project.toml

@@ -15,7 +15,7 @@ Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 
 [compat]
 AbstractFFTs = "0.5, 1"
-ApproxFunBase = "0.3.4"
+ApproxFunBase = "0.3"
 DomainSets = "0.3, 0.4"
 FFTW = "1.1"
 FastTransforms = "0.10, 0.11, 0.12"