Index: head/math/xtensor/Makefile
===================================================================
--- head/math/xtensor/Makefile	(revision 531900)
+++ head/math/xtensor/Makefile	(revision 531901)
@@ -1,35 +1,35 @@
 # $FreeBSD$
 
 PORTNAME=	xtensor
-DISTVERSION=	0.21.4
+DISTVERSION=	0.21.5
 CATEGORIES=	math
 
 MAINTAINER=	yuri@FreeBSD.org
 COMMENT=	Multi-dimensional arrays with broadcasting and lazy computing
 
 LICENSE=	BSD3CLAUSE
 LICENSE_FILE=	${WRKSRC}/LICENSE
 
 BUILD_DEPENDS=	nlohmann-json>0:devel/nlohmann-json \
 		xtl-quant-stack>0:devel/xtl-quant-stack
 RUN_DEPENDS=	nlohmann-json>0:devel/nlohmann-json \
 		xtl-quant-stack>0:devel/xtl-quant-stack
 TEST_DEPENDS=	nlohmann-json>0:devel/nlohmann-json \
 		xtl-quant-stack>0:devel/xtl-quant-stack \
 		googletest>0:devel/googletest
 
 USES=		cmake
 USE_GITHUB=	yes
 GH_ACCOUNT=	xtensor-stack
 
 NO_BUILD=	yes
 NO_ARCH=	yes
 
 do-test:
 	@${RLN} ${STAGEDIR}${PREFIX}/include ${WRKSRC}/test/staged-include
 	@cd ${WRKSRC}/test && \
 		${SETENV} ${CONFIGURE_ENV} ${CMAKE_BIN} ${CMAKE_ARGS} . && \
 		${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} && \
 		${MAKE_ENV} ${MAKE_CMD} ${MAKE_ARGS} xtest
 
 .include <bsd.port.mk>
Index: head/math/xtensor/distinfo
===================================================================
--- head/math/xtensor/distinfo	(revision 531900)
+++ head/math/xtensor/distinfo	(revision 531901)
@@ -1,3 +1,3 @@
-TIMESTAMP = 1583606288
-SHA256 (xtensor-stack-xtensor-0.21.4_GH0.tar.gz) = 143ef2536f1671e1c7c7834de4a040f1694112e23222fcd2ae59b0f5e5124b57
-SIZE (xtensor-stack-xtensor-0.21.4_GH0.tar.gz) = 1142587
+TIMESTAMP = 1587101647
+SHA256 (xtensor-stack-xtensor-0.21.5_GH0.tar.gz) = 30cb896b6686683ddaefb12c98bf1109fdfe666136dd027aba1a1e9aa825c241
+SIZE (xtensor-stack-xtensor-0.21.5_GH0.tar.gz) = 1144111
Index: head/math/xtensor/pkg-descr
===================================================================
--- head/math/xtensor/pkg-descr	(revision 531900)
+++ head/math/xtensor/pkg-descr	(revision 531901)
@@ -1,9 +1,9 @@
 xtensor is a C++ library meant for numerical analysis with multi-dimensional
 array expressions.
 
 xtensor provides:
 * an extensible expression system enabling lazy broadcasting
 * an API following the idioms of the C++ standard library
 * tools to manipulate array expressions and build upon xtensor
 
-WWW: https://quantstack.net/xtensor
+WWW: https://github.com/xtensor-stack/xtensor
Index: head/math/xtensor/pkg-plist
===================================================================
--- head/math/xtensor/pkg-plist	(revision 531900)
+++ head/math/xtensor/pkg-plist	(revision 531901)
@@ -1,68 +1,69 @@
 include/xtensor/xaccessible.hpp
 include/xtensor/xaccumulator.hpp
 include/xtensor/xadapt.hpp
 include/xtensor/xarray.hpp
 include/xtensor/xassign.hpp
 include/xtensor/xaxis_iterator.hpp
+include/xtensor/xaxis_slice_iterator.hpp
 include/xtensor/xbroadcast.hpp
 include/xtensor/xbuffer_adaptor.hpp
 include/xtensor/xbuilder.hpp
 include/xtensor/xcomplex.hpp
 include/xtensor/xcontainer.hpp
 include/xtensor/xcsv.hpp
 include/xtensor/xdynamic_view.hpp
 include/xtensor/xeval.hpp
 include/xtensor/xexception.hpp
 include/xtensor/xexpression.hpp
 include/xtensor/xexpression_holder.hpp
 include/xtensor/xexpression_traits.hpp
 include/xtensor/xfixed.hpp
 include/xtensor/xfunction.hpp
 include/xtensor/xfunctor_view.hpp
 include/xtensor/xgenerator.hpp
 include/xtensor/xhistogram.hpp
 include/xtensor/xindex_view.hpp
 include/xtensor/xinfo.hpp
 include/xtensor/xio.hpp
 include/xtensor/xiterable.hpp
 include/xtensor/xiterator.hpp
 include/xtensor/xjson.hpp
 include/xtensor/xlayout.hpp
 include/xtensor/xmanipulation.hpp
 include/xtensor/xmasked_view.hpp
 include/xtensor/xmath.hpp
 include/xtensor/xmime.hpp
 include/xtensor/xnoalias.hpp
 include/xtensor/xnorm.hpp
 include/xtensor/xnpy.hpp
 include/xtensor/xoffset_view.hpp
 include/xtensor/xoperation.hpp
 include/xtensor/xoptional.hpp
 include/xtensor/xoptional_assembly.hpp
 include/xtensor/xoptional_assembly_base.hpp
 include/xtensor/xoptional_assembly_storage.hpp
 include/xtensor/xpad.hpp
 include/xtensor/xrandom.hpp
 include/xtensor/xreducer.hpp
 include/xtensor/xrepeat.hpp
 include/xtensor/xscalar.hpp
 include/xtensor/xsemantic.hpp
 include/xtensor/xshape.hpp
 include/xtensor/xslice.hpp
 include/xtensor/xsort.hpp
 include/xtensor/xstorage.hpp
 include/xtensor/xstrided_view.hpp
 include/xtensor/xstrided_view_base.hpp
 include/xtensor/xstrides.hpp
 include/xtensor/xtensor.hpp
 include/xtensor/xtensor_config.hpp
 include/xtensor/xtensor_forward.hpp
 include/xtensor/xtensor_simd.hpp
 include/xtensor/xutils.hpp
 include/xtensor/xvectorize.hpp
 include/xtensor/xview.hpp
 include/xtensor/xview_utils.hpp
 lib/cmake/xtensor/xtensorConfig.cmake
 lib/cmake/xtensor/xtensorConfigVersion.cmake
 lib/cmake/xtensor/xtensorTargets.cmake
 libdata/pkgconfig/xtensor.pc