Update changelog and bump version to 0.4.4 #721

Job	Run time
Documentation	4m 33s
Python 3.6 • ubuntu-20.04	4m 31s
Python 3.7 • ubuntu-20.04	4m 30s
Python 3.8 (with Praat tests) • ubuntu-20.04	4m 31s
Python 3.9 • ubuntu-20.04	4m 9s
Python 3.10 • ubuntu-20.04	4m 35s
Python 3.11 • ubuntu-20.04	4m 32s
Python 3.12 (with Praat tests) • ubuntu-20.04	4m 30s
Python pypy-2.7 • ubuntu-20.04	4m 13s
Python pypy-3.7 • ubuntu-20.04	1s
Python pypy-3.8 • ubuntu-20.04	1s
Python pypy-3.9 (with Praat tests) • ubuntu-20.04	1s
Python 3.8 (GCC 10) • ubuntu-20.04	4m 29s
Python 3.8 (Clang 12) • ubuntu-20.04	4m 31s
Python 3.8 (Release) • ubuntu-20.04	4m 29s
Python 3.8 (with Praat tests) • macos-12	1s
Python 3.9 • macos-12	1s
Python 3.10 • macos-12	4m 29s
Python 3.11 • macos-12	4m 26s
Python 3.12 (with Praat tests) • macos-12	4m 27s
Python 3.8 (Release) • macos-12	4m 27s
Python pypy-3.7 • macos-12	1s
Python pypy-3.8 • macos-12	1s
Python pypy-3.9 • macos-12	1s
Python 3.8 (with Praat tests) • windows-2019	1s
Python 3.9 • windows-2019	1s
Python 3.10 • windows-2019	4m 4s
Python 3.11 • windows-2019	4m 13s
Python 3.12 (with Praat tests) • windows-2019	1s
Python 3.12 (32-bit) • windows-2019	1s
Python 3.12 (Release) • windows-2019	4m 19s
Python pypy-3.6 • windows-2019	1s
Python pypy-3.7 • windows-2019	1s
Python pypy-3.8 • windows-2019	1s
Python pypy-3.9 • windows-2019	1s
	1h 24m 14s

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