use deque for emsdevices

src/emsesp.cpp

@@ -56,7 +56,7 @@ WebLogService      EMSESP::webLogService      = WebLogService(&webServer, EMSESP
 using DeviceFlags = EMSdevice;
 using DeviceType  = EMSdevice::DeviceType;
 
-std::vector<std::unique_ptr<EMSdevice>> EMSESP::emsdevices;      // array of all the detected EMS devices
+std::deque<std::unique_ptr<EMSdevice>> EMSESP::emsdevices;      // array of all the detected EMS devices
 std::vector<EMSESP::Device_record>     EMSESP::device_library_; // library of all our known EMS devices, in heap
 
 uuid::log::Logger EMSESP::logger_{F_(emsesp), uuid::log::Facility::KERN};

src/emsesp.h

@@ -220,7 +220,7 @@ class EMSESP {
 
     static bool return_not_found(JsonObject output, const char * msg, const char * cmd);
 
-    static std::vector<std::unique_ptr<EMSdevice>> emsdevices;
+    static std::deque<std::unique_ptr<EMSdevice>> emsdevices;
 
     // services
     static Mqtt              mqtt_;