~mrms/logsum

Update to use fmt.um

Signed-off-by: Marek Maškarinec <marek@mrms.cz>
Update umka

Signed-off-by: Marek Maškarinec <marek@mrms.cz>
Fix logs.um

Signed-off-by: Marek Maškarinec <marek@mrms.cz>
Fix .build.yml

Signed-off-by: Marek Maškarinec <marek@mrms.cz>
Update .build.yml
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