bump version to 1.4.0

changes.txt

@@ -1,7 +1,10 @@
 -- Add changes to unreleased tag until we make a release.
 
-unreleased
--
+13 Apr 2018, v1.4.0
+- Replaced UINT8_MAX by UNUSED_PIN @Rotzbua
+- Fixed hang PCD_Init() on non-arduino boards @heziegl
+- deprecate MIFARE_SetAccessBits @Rotzbua
+- IMPORTANT: v1.4.X will be last version under license "unlicense"
 
 22 Mar 2017, v1.3.6
 - Added deprecate and compiler warnings @Rotzbua

library.json

@@ -7,7 +7,7 @@
     "type": "git",
     "url": "https://github.com/miguelbalboa/rfid.git"
   },
-  "version": "1.3.6",
+  "version": "1.4.0",
   "exclude": "doc",
   "frameworks": "arduino",
   "platforms": ["atmelavr", "ststm32", "teensy", "espressif8266"]

library.properties

@@ -1,5 +1,5 @@
 name=MFRC522
-version=1.3.6
+version=1.4.0
 author=GithubCommunity
 maintainer=miguelbalboa
 sentence=Arduino RFID Library for MFRC522 (SPI)