Make dependencies optional

Author: ufechner7

Project.toml

@@ -7,8 +7,6 @@ version = "0.4.15"
 FileIO = "5789e2e9-d7fb-5bc7-8068-2c6fae9b9549"
 GLMakie = "e9467ef8-e4e7-5192-8a1a-b1aee30e663a"
 GeometryBasics = "5c1252a2-5f33-56bf-86c9-59e7332b4326"
-HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"
-JSON3 = "0f8b85d8-7281-11e9-16c2-39a750bddbf1"
 Joysticks = "82f05805-4863-42dc-b1a7-0852bd62c632"
 KiteUtils = "90980105-b163-44e5-ba9f-8b1c83bb0533"
 LinearAlgebra = "37e2e46d-f89d-539d-b4ee-838fcccc9c8e"
@@ -19,7 +17,6 @@ Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
 Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
 Rotations = "6038ab10-8711-5258-84ad-4b1120ba62dc"
 StaticArrays = "90137ffa-7385-5640-81b9-e52037218182"
-StructTypes = "856f2bd8-1eba-4b0a-8007-ebc267875bd4"
 Timers = "21f18d07-b854-4dab-86f0-c15a3821819a"
 
 [compat]
@@ -43,6 +40,9 @@ KitePodModels = "9de5dc81-f971-414a-927b-652b2f41c539"
 PackageCompiler = "9b87118b-4619-50d2-8e1e-99f35a4d4d9d"
 Plots = "91a5bcdd-55d7-5caf-9e0b-520d859cae80"
 PyPlot = "d330b81b-6aea-500a-939a-2ce795aea3ee"
+HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"
+JSON3 = "0f8b85d8-7281-11e9-16c2-39a750bddbf1"
+StructTypes = "856f2bd8-1eba-4b0a-8007-ebc267875bd4"
 Test = "8dfed614-e22c-5e08-85e1-65c5234f0b40"
 
 [targets]