devel/xtl-quant-stack: Update 0.4.15 -> 0.5.2

Reported by:	portscout

devel/xtl-quant-stack/Makefile

@@ -1,7 +1,7 @@
 # $FreeBSD$
 
 PORTNAME=	xtl
-DISTVERSION=	0.4.15
+DISTVERSION=	0.5.2
 CATEGORIES=	devel
 PKGNAMESUFFIX=	-quant-stack
 
@@ -16,9 +16,10 @@ RUN_DEPENDS=	nlohmann-json>0:devel/nlohmann-json
 TEST_DEPENDS=	nlohmann-json>0:devel/nlohmann-json \
 		googletest>0:devel/googletest
 
-USES=		cmake
+USES=		cmake:outsource
 USE_GITHUB=	yes
 GH_ACCOUNT=	QuantStack
+
 NO_BUILD=	yes
 NO_ARCH=	yes
 

devel/xtl-quant-stack/distinfo

@@ -1,3 +1,3 @@
-TIMESTAMP = 1535133689
-SHA256 (QuantStack-xtl-0.4.15_GH0.tar.gz) = 550ca5ca2ae7fedec6421b7545d592f4474bcd15bb9dec49c644f17b547b9ff6
-SIZE (QuantStack-xtl-0.4.15_GH0.tar.gz) = 89248
+TIMESTAMP = 1545506931
+SHA256 (QuantStack-xtl-0.5.2_GH0.tar.gz) = 6f9d2f849e4dd8a36db1e62648ed1855a691991739119b0a73cd55084c6d28b2
+SIZE (QuantStack-xtl-0.5.2_GH0.tar.gz) = 98741

devel/xtl-quant-stack/files/patch-test_CMakeLists.txt

@@ -1,11 +0,0 @@
-Temporary workaround suggested by the upstream.
---- test/CMakeLists.txt.orig	2018-08-12 16:02:18 UTC
-+++ test/CMakeLists.txt
-@@ -12,6 +12,7 @@ if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CM
-     project(xtl-test)
- 
-     find_package(xtl REQUIRED CONFIG)
-+    find_package(nlohmann_json QUIET)
-     set(XTL_INCLUDE_DIR ${xtl_INCLUDE_DIRS})
- endif ()
- 

devel/xtl-quant-stack/pkg-plist

@@ -15,6 +15,8 @@ include/xtl/xoptional.hpp
 include/xtl/xoptional_sequence.hpp
 include/xtl/xproxy_wrapper.hpp
 include/xtl/xsequence.hpp
+include/xtl/xspan.hpp
+include/xtl/xspan_impl.hpp
 include/xtl/xtl_config.hpp
 include/xtl/xtype_traits.hpp
 include/xtl/xvariant.hpp