Improve fetch times massively by changing from https to http (#112)

256px tile fetch/decode from ~350-500 ms to ~75–90 ms

Author: CelliesProjects

src/TileProvider.hpp

@@ -38,31 +38,31 @@ struct TileProvider
 
 const TileProvider osmStandard = {
     "OSM Standard",
-    "https://tile.openstreetmap.org/{z}/{x}/{y}.png",
+    "http://tile.openstreetmap.org/{z}/{x}/{y}.png",
     "© OpenStreetMap contributors",
     false,
     "",
     19, 0, 256};
 
 const TileProvider ThunderTransportDark256 = {
     "Thunderforest Transport Dark 256px",
-    "https://tile.thunderforest.com/transport-dark/{z}/{x}/{y}.png?apikey={apiKey}",
+    "http://tile.thunderforest.com/transport-dark/{z}/{x}/{y}.png?apikey={apiKey}",
     "© Thunderforest, OpenStreetMap contributors",
     true,
     "YOUR_THUNDERFOREST_KEY",
     22, 0, 256};
 
 const TileProvider ThunderForestCycle512 = {
     "Thunderforest Cycle 512px",
-    "https://tile.thunderforest.com/cycle/{z}/{x}/{y}@2x.png?apikey={apiKey}",
+    "http://tile.thunderforest.com/cycle/{z}/{x}/{y}@2x.png?apikey={apiKey}",
     "© Thunderforest, OpenStreetMap contributors",
     true,
     "YOUR_THUNDERFOREST_KEY",
     22, 0, 512};
 
 const TileProvider ThunderForestCycle256 = {
     "Thunderforest Cycle 256px",
-    "https://tile.thunderforest.com/cycle/{z}/{x}/{y}.png?apikey={apiKey}",
+    "http://tile.thunderforest.com/cycle/{z}/{x}/{y}.png?apikey={apiKey}",
     "© Thunderforest, OpenStreetMap contributors",
     true,
     "YOUR_THUNDERFOREST_KEY",