Release engineering improvements (#1844)

* version set from package.json and release bin names

* support direnv virtualenv

* versioned PlatformIO environment

* matrix support for parralel CI

* gather artifacts

* release on tagging

* minor scripts formatting

wled00/wled.h

@@ -51,7 +51,7 @@
 //This is generally a terrible idea, but improves boot success on boards with a 3.3v regulator + cap setup that can't provide 400mA peaks
 //#define WLED_DISABLE_BROWNOUT_DET
 
-// Library inclusions. 
+// Library inclusions.
 #include <Arduino.h>
 #ifdef ESP8266
   #include <ESP8266WiFi.h>
@@ -171,8 +171,15 @@
 # define _INIT_N(x) UNPACK x
 #endif
 
+#define STRINGIFY(X) #X
+#define TOSTRING(X) STRINGIFY(X)
+
+#ifndef WLED_VERSION
+  #define WLED_VERSION "dev"
+#endif
+
 // Global Variable definitions
-WLED_GLOBAL char versionString[] _INIT("0.12.0");
+WLED_GLOBAL char versionString[] _INIT(TOSTRING(WLED_VERSION));
 #define WLED_CODENAME "Hikari"
 
 // AP and OTA default passwords (for maximum security change them!)
@@ -203,7 +210,7 @@ WLED_GLOBAL int8_t irPin _INIT(4);
 WLED_GLOBAL int8_t irPin _INIT(IRPIN);
 #endif
 
-//WLED_GLOBAL byte presetToApply _INIT(0); 
+//WLED_GLOBAL byte presetToApply _INIT(0);
 
 WLED_GLOBAL char ntpServerName[33] _INIT("0.wled.pool.ntp.org");   // NTP server to use
 
@@ -224,7 +231,7 @@ WLED_GLOBAL bool noWifiSleep _INIT(false);                         // disabling
     WLED_GLOBAL int ethernetType _INIT(WLED_ETH_DEFAULT);          // ethernet board type
   #else
     WLED_GLOBAL int ethernetType _INIT(WLED_ETH_NONE);             // use none for ethernet board type if default not defined
-  #endif               
+  #endif
 #endif
 
 // LED CONFIG
@@ -548,7 +555,7 @@ WLED_GLOBAL bool e131NewData _INIT(false);
 // led fx library object
 WLED_GLOBAL BusManager busses _INIT(BusManager());
 WLED_GLOBAL WS2812FX strip _INIT(WS2812FX());
-WLED_GLOBAL BusConfig* busConfigs[WLED_MAX_BUSSES] _INIT({nullptr}); //temporary, to remember values from network callback until after 
+WLED_GLOBAL BusConfig* busConfigs[WLED_MAX_BUSSES] _INIT({nullptr}); //temporary, to remember values from network callback until after
 WLED_GLOBAL bool doInitBusses _INIT(false);
 
 // Usermod manager