[WIP] bootstrap5 + icons #192

Job	Run time
Lint the package	25s
Functional Python 3 web tests	8m 6s
Build the documentation	31s
Validate coverage	21s
Python: 3.8-x64 on ubuntu-latest	19s
Python: 3.8-x64 on windows-latest	45s
Python: 3.8-x86 on windows-latest	1m 57s
Python: 3.8-x64 on macos-latest	26s
Python: 3.9-x64 on ubuntu-latest	30s
Python: 3.9-x64 on windows-latest	1m 13s
Python: 3.9-x86 on windows-latest	2m 19s
Python: 3.9-x64 on macos-latest	35s
Python: 3.10-x64 on ubuntu-latest	27s
Python: 3.10-x64 on windows-latest	58s
Python: 3.10-x86 on windows-latest	2m 4s
Python: 3.10-x64 on macos-latest	32s
Python: 3.11-x64 on ubuntu-latest	21s
Python: 3.11-x64 on windows-latest	1m 9s
Python: 3.11-x86 on windows-latest	1m 53s
Python: 3.11-x64 on macos-latest	46s
Python: 3.12-x64 on ubuntu-latest	25s
Python: 3.12-x64 on windows-latest	1m 17s
Python: 3.12-x86 on windows-latest	2m 38s
Python: 3.12-x64 on macos-latest	34s
Python: pypy-3.10-x64 on ubuntu-latest	55s
Python: pypy-3.10-x64 on windows-latest	1m 44s
Python: pypy-3.10-x86 on windows-latest	2m 29s
Python: pypy-3.10-x64 on macos-latest	1m 20s
Python: pypy-3.7- on ubuntu-latest	47s
	37m 46s

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