NEWS.adoc: update and move "expected" improvements from v2.8.3 to v2.… #288

Job	Run time
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, no)	4m 16s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, libusb-1.0)	4m 40s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, no, libusb-0.1)	4m 57s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, no)	4m 18s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, libusb-1.0)	4m 26s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, nss, libusb-0.1)	4m 32s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, no)	6m 22s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, libusb-1.0)	4m 28s
Analyze (cpp, ubuntu-latest, CC=gcc CXX=g++, openssl, libusb-0.1)	4m 47s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, no)	4m 14s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, libusb-1.0)	4m 32s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, no, libusb-0.1)	4m 44s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, no)	4m 25s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, libusb-1.0)	4m 47s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, nss, libusb-0.1)	4m 36s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, no)	4m 34s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, libusb-1.0)	4m 41s
Analyze (cpp, ubuntu-latest, CC=clang CXX=clang++, openssl, libusb-0.1)	4m 33s
Analyze (python, ubuntu-latest, PYTHON=python3, no, no)	1m 37s
	1h 25m 29s

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