Proximity Observer will not fail, if any provided tag has at least on…

…e device assigned to it.

CHANGELOG.md

@@ -5,6 +5,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.html).
 
+## [1.4.0] 2019-04-25
+### Changed:
+- Now `ProximityObserver` will return error (and thus will fail) if *all tags* have no devices assigned. If any tag will have at least one device assigned, then monitoring will be started.
+
 ## [1.3.1] - 2019-03-27
 
 ### Fixed:
@@ -28,19 +32,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ### Changed:
 - The SDK drops support for the arm7vs architecture.
 
-## [1.2.1] - 2018-12-27
-
-### Changed:
-- Dependecy on [Estimote Bluetooth Scanning library](https://github.com/Estimote/iOS-Bluetooth-Scanning) to match its version `1.0.0-alpha`.
-
-## [1.2.0] - 2018-09-19
-
-### Added:
-- Support for Swift 4.2 and the new build system in Xcode 10.
-
-### Changed:
-- The SDK drops support for the arm7vs architecture.
-
 ## [1.1.0] - 2018-08-20
 
 ### Added:
@@ -167,3 +158,4 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - `EPXProximityObserver`, `EPXProximityZone`, `EPXProximityRange`, `EPXProximityDeviceAttachment` classes for beacon proximity detection & beacon identification.
 - Estimote Monitoring algorithm with motion detection for reliable beacon proximity detection experience.
 - Built-in visit analytics sending. The collected data can be seen in [Estimote Cloud](https://cloud.estimote.com/#/analytics).
+

EstimoteProximitySDK/EstimoteProximitySDK.framework/Headers/EstimoteProximitySDK-Swift.h

@@ -1,6 +1,6 @@
 #if 0
 #elif defined(__arm64__) && __arm64__
-// Generated by Apple Swift version 5.0 (swiftlang-1001.0.69.5 clang-1001.0.46.3)
+// Generated by Apple Swift version 5.0.1 (swiftlang-1001.0.82.4 clang-1001.0.46.5)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wgcc-compat"
 
@@ -197,7 +197,7 @@ typedef unsigned int swift_uint4  __attribute__((__ext_vector_type__(4)));
 #pragma clang diagnostic pop
 
 #elif defined(__ARM_ARCH_7A__) && __ARM_ARCH_7A__
-// Generated by Apple Swift version 5.0 (swiftlang-1001.0.69.5 clang-1001.0.46.3)
+// Generated by Apple Swift version 5.0.1 (swiftlang-1001.0.82.4 clang-1001.0.46.5)
 #pragma clang diagnostic push
 #pragma clang diagnostic ignored "-Wgcc-compat"