chore: disable PlatformIO ESP8266 Tests (#87)

AUnit has stopped correctly building tests for the partially-supported ESP8266 platform.
It seems this may be a change in ESP8266 Core, so this PR disables ESP8266 tests in PlatformIO until support is worked out.

CHANGELOG.md

@@ -7,6 +7,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## Unreleased
 
+### Changed
+
 - improved Windows support ([#83])
 
 ## [0.3.1] - 2019-02-19

test/platformio.ini

@@ -20,15 +20,16 @@ build_flags = -I../test/iot/ -I../src -I../src/lib -I../src/include/cpp-crypto -
 src_filter = +<*> -<.git/> -<examples/> -<extras> -<bin> -<lib> -<_3rdParty> -<CMakeFiles> -<src/CMakeFiles> -<test/CMakeFiles> -<src/lib/ArduinoJson> -<src/lib/bip39> -<src/lib/uECC> -<test/lib/googletest>
 upload_speed = 921600
 
-[env:esp8266]
-platform = espressif8266
-board = huzzah
-framework = arduino
-lib_ldf_mode = ${common.lib_ldf_mode}
-lib_deps = ${common.lib_deps}
-build_flags = ${common.build_flags}
-src_filter = ${common.src_filter}
-upload_speed = ${common.upload_speed}
+# esp8266 unit tests disabled until support is worked out
+#[env:esp8266]
+#platform = espressif8266
+#board = huzzah
+#framework = arduino
+#lib_ldf_mode = ${common.lib_ldf_mode}
+#lib_deps = ${common.lib_deps}
+#build_flags = ${common.build_flags}
+#src_filter = ${common.src_filter}
+#upload_speed = ${common.upload_speed}
 
 [env:esp32]
 platform = espressif32