Merge pull request ruslo#1380 from ruslo/pr.json

nlohmann_json 3.1.2

Add pcg package (ruslo#1377)

Add http-parser package (ruslo#1375)

Merge pull request ruslo#1376 from dvirtz/pr.catch.221

bump Catch to 2.2.1

Merge pull request ruslo#1374 from headupinclouds/pr.aglet.egl.es3

aglet v1.2.1 (egl opengl es 3.0 support)

Merge pull request ruslo#1372 from isaachier/jansson

Add jansson package

Add cctz package (ruslo#1370)

Merge pull request ruslo#1362 from xsacha/opencv_3_4_1

Add OpenCV 3.4.1. Update config.

Merge pull request ruslo#1355 from xsacha/boost-android-on-windows

Fix for compiling Boost for Android on Windows.

Merge pull request ruslo#1356 from xsacha/opencv_3_4_1

Add OpenCV-Extra 3.4.1