Release/v1.3.2 (#165)

* [ v1.3.2 ] increasing version in xi_version.h, and extending RELEASE-NOTES.md

* [ v1.3.2 ] regenerated the doxygen dox

* Update RELEASE-NOTES.md

Updated Release Notes with a new description of HTTP URL delivery for SFT.

* [ v1.3.2 ] release notes date update

RELEASE-NOTES.md

@@ -1,3 +1,37 @@
+# Xively Client version 1.3.2
+#### Nov 24 2017
+
+## Features
+
+### Extensions to Secure File Transfer (SFT) and Firmware Updates (FWU) feature
+
+- SFT now supports Large File Downloads over HTTP. The SFT Service cannot deliver files
+  larger than 8MB through MQTT. However, it now transmits URLs for these large files so
+  that larger devices may download them over the HTTP protocol. The Xively C Client now has an
+  updated Board Support Package (BSP) which reports these URLs to the Application, which
+  must then download the file separately and report the download result to the Xively C Client.
+  The file download status report is propagated back to the Xively SFT service by the
+  Xively C Client for fleet-wide deployment tracking, and then the Xivley C Client continues
+  the update process by working through the next file on the download list. From an update flow
+  perspective, nothing has changed, only the protocol that was used to download the file.
+- Added the ability for the Applications to order the files downloaded over the Xively Secure
+  File Transfer service. Please see the documentation for
+  `xi_bsp_io_fwu_order_resource_downloads()` in the header `include/bsp/xi_bsp_fwu.h` for more
+  information.
+- Auto-test coverage was increased on the new SFT feature.
+
+### ESP32 Support Extended
+
+- ESP32 now supports firmware updates over MQTT using Xively's Secure File Transfer
+  protocol.
+- Travis CI now builds ESP32 target.
+
+### Misc
+
+- API extension: added `xi_is_context_connected( xi_context_handle_t )` to the standard
+  Xively API.
+
+
 # Xively Client version 1.3.1
 #### Oct 10 2017