temporarily limit fftw to <v1.5 (#211)

Author: jishnub

Project.toml

@@ -8,6 +8,7 @@ BandedMatrices = "aae01518-5342-5314-be14-df237901396f"
 BlockArrays = "8e7c35d0-a365-5155-bbbb-fb81a777f24e"
 BlockBandedMatrices = "ffab5731-97b5-5995-9138-79e8c1846df0"
 DomainSets = "5b8099bc-c8ec-5219-889f-1d9e522a28bf"
+FFTW = "7a1cc6ca-52ef-59f5-83cd-3a7055c09341"
 FastGaussQuadrature = "442a2c76-b920-505d-bb47-c5924d526838"
 FastTransforms = "057dd010-8810-581a-b7be-e3fc3b93f78c"
 FillArrays = "1a297f60-69ca-5386-bcde-b61e274b549b"
@@ -27,6 +28,7 @@ BandedMatrices = "0.16, 0.17"
 BlockArrays = "0.14, 0.15, 0.16"
 BlockBandedMatrices = "0.10, 0.11"
 DomainSets = "0.5, 0.6"
+FFTW = "1 - 1.5"
 FastGaussQuadrature = "0.4, 0.5"
 FastTransforms = "0.12, 0.13, 0.14"
 FillArrays = "0.11, 0.12, 0.13"