[Update] devel/py-arrow : Update to 0.14.7

Index: Makefile
===================================================================
RCS file: /cvs/ports/devel/py-arrow/Makefile,v
retrieving revision 1.6
diff -u -p -r1.6 Makefile
--- Makefile 27 Aug 2019 23:02:55 -0000 1.6
+++ Makefile 7 Sep 2019 01:37:17 -0000
@@ -2,7 +2,7 @@

COMMENT = better dates and times for Python

-MODPY_EGG_VERSION = 0.14.5
+MODPY_EGG_VERSION = 0.14.7
DISTNAME = arrow-${MODPY_EGG_VERSION}
PKGNAME = py-arrow-${MODPY_EGG_VERSION}

Index: distinfo
===================================================================
RCS file: /cvs/ports/devel/py-arrow/distinfo,v
retrieving revision 1.4
diff -u -p -r1.4 distinfo
--- distinfo 27 Aug 2019 23:02:55 -0000 1.4
+++ distinfo 7 Sep 2019 01:37:17 -0000
@@ -1,2 +1,2 @@
-SHA256 (arrow-0.14.5.tar.gz) = AYYCbP2Uyk+3c/MMxTmCiaMCdIDTNeDlwNJ3JkN2MTc=
-SIZE (arrow-0.14.5.tar.gz) = 590609
+SHA256 (arrow-0.14.7.tar.gz) = Z/i+fAz0IEJLxi2NfcQLROS7L3tRX5zClU+zbjV5dlY=
+SIZE (arrow-0.14.7.tar.gz) = 67657
Hi, ports@:

Here is a patch for devel/py-arrow to update to 0.14.7.
It build well on amd64-head system and passed all tests,
both with python2 and python3.
No other ports depend on it.

Comments? OK?
wen