dev-python/stapler: new snapshot after 1.0.0 release

Removes dep on more-itertools entirely.  Upstream has also moved to
poetry build.  I have also moved ebuild to EAPI=7.

Bug: https://bugs.gentoo.org/752240
Package-Manager: Portage-3.0.8, Repoman-3.0.2
Signed-off-by: Ben Kohler <bkohler@gentoo.org>

dev-python/stapler/Manifest

@@ -1 +1 @@
-DIST stapler-1.0_pre20191215.tar.gz 37483 BLAKE2B e13db364fb91fc4e537f4a1c65e90bf2bbd950ba771cc02cc8dc95bf826c0aebc0160dbe098ad1cd5fc88ab8f0d0656bc96b594bf1d6444cc6bb03265ad8c2d9 SHA512 f88b88fd70dc4083f7bca8bbef0033c1d02af4bbb69f99af7ae80473b297a81fd11a27efda1d9be2fb4290c714444ca8b05ab1bc16e012b91be3435cb53b4b85
+DIST stapler-1.0.0_p20200531.tar.gz 42840 BLAKE2B bfa909e25dfd65101321e153f5129d28bbb360845d6a3622c53ec3921610b9987a8e5c85c4428ee1cd196c0ee42b5a2eefdca7c4a75be223867fad4d830b148a SHA512 7c5f76240f1dff67eae3eb25d29087c7bbff3aace65030d10836f60769798d653b30acb6cc89355ba1eb590dbfc3236cb4ae95c02db6e779ad474781a17bdbc8

dev-python/stapler/stapler-1.0.0_p20200531.ebuild

@@ -1,14 +1,14 @@
 # Copyright 1999-2020 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-EAPI=6
+EAPI=7
 
 PYTHON_COMPAT=( python3_{6,7,8} )
+DISTUTILS_USE_SETUPTOOLS=pyproject.toml
 
 inherit distutils-r1 vcs-snapshot
 
-# Commit Date: 15th December 2019
-COMMIT="875325103234b4a3ed96a4a5167ff78c291edbff"
+COMMIT="1cabc85521e2badfc1e0d690086e286e701c2d9e"
 
 DESCRIPTION="Suite of tools for PDF files manipulation written in Python"
 HOMEPAGE="https://github.com/hellerbarde/stapler"
@@ -20,8 +20,8 @@ KEYWORDS="~amd64 ~x86"
 
 RDEPEND="
 	dev-python/PyPDF2[${PYTHON_USEDEP}]
-	<dev-python/more-itertools-6.0.0[${PYTHON_USEDEP}]"
+"
 
 DEPEND="
 	${RDEPEND}
-	dev-python/setuptools[${PYTHON_USEDEP}]"
+"