Drop Julia VERSION < v1.6

Author: dlfivefifty

.github/workflows/ci.yml

@@ -9,8 +9,7 @@ jobs:
     strategy:
       matrix:
         version:
-          - '1.3'
-          - '1'
+          - '1.6'
           - '^1.7.0-0'
         os:
           - ubuntu-latest

Project.toml

@@ -19,7 +19,7 @@ Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 ToeplitzMatrices = "c751599d-da0a-543b-9d20-d0a503d91d24"
 
 [compat]
-AbstractFFTs = "0.5, 1.0"
+AbstractFFTs = "1.0"
 ArrayLayouts = "0.4, 0.5, 0.6, 0.7"
 BinaryProvider = "0.5"
 DSP = "0.6, 0.7"
@@ -30,4 +30,4 @@ FillArrays = "0.9, 0.10, 0.11, 0.12"
 Reexport = "0.2, 1.0"
 SpecialFunctions = "0.10, 1"
 ToeplitzMatrices = "0.6, 0.7"
-julia = "1.3"
+julia = "1.6"