Add ExplicitImports

ExplicitImports helps keeping under control where each function comes
from

Project.toml

@@ -21,6 +21,7 @@ GeoMakieExt = "GeoMakie"
 Aqua = "0.8"
 CairoMakie = "0.11.11, 0.12"
 Documenter = "1"
+ExplicitImports = "1.6"
 GeoMakie = "0.6.5, 0.7"
 JuliaFormatter = "1"
 NCDatasets = "0.13.1, 0.14"
@@ -35,10 +36,11 @@ julia = "1.9"
 Aqua = "4c88cf16-eb10-579e-8560-4a9242c79595"
 CairoMakie = "13f3f980-e62b-5c42-98c6-ff1f3baf88f0"
 Documenter = "e30172f5-a6a5-5a46-863b-614d45cd2de4"
+ExplicitImports = "7d51a73a-1435-4ff3-83d9-f097790105c7"
 GeoMakie = "db073c08-6b98-4ee5-b6a4-5efafb3259c6"
 JuliaFormatter = "98e50ef6-434e-11e9-1051-2b60c6c9e899"
 SafeTestsets = "1bc83da4-3b8d-516f-aca4-4fe02f6d838f"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]
-test = ["Aqua", "CairoMakie", "Documenter", "GeoMakie", "JuliaFormatter", "SafeTestsets", "Test"]
+test = ["Aqua", "CairoMakie", "Documenter", "ExplicitImports", "GeoMakie", "JuliaFormatter", "SafeTestsets", "Test"]

src/ClimaAnalysis.jl

@@ -1,5 +1,5 @@
 module ClimaAnalysis
-using Reexport
+import Reexport: @reexport
 
 include("Utils.jl")
 import .Utils

test/aqua.jl

@@ -1,6 +1,7 @@
 using Test
 using ClimaAnalysis
 using Aqua
+import ExplicitImports
 
 @testset "Aqua tests" begin
     Aqua.test_undefined_exports(ClimaAnalysis)
@@ -9,3 +10,13 @@ using Aqua
     Aqua.detect_ambiguities(ClimaAnalysis; recursive = true)
     Aqua.test_piracies(ClimaAnalysis)
 end
+
+@testset "Explicit Imports" begin
+    @test isnothing(ExplicitImports.check_no_implicit_imports(ClimaAnalysis))
+    @test isnothing(
+        ExplicitImports.check_no_stale_explicit_imports(ClimaAnalysis),
+    )
+    @test isnothing(
+        ExplicitImports.check_all_qualified_accesses_via_owners(ClimaAnalysis),
+    )
+end