a very simple upgrade dialog

[aw-was-here]

at least a something closer to #648

[sourcery-ai]

Sourcery Code Quality Report

✅  Merging this PR will increase code quality in the affected files by 5.10%.

Quality metrics	Before	After	Change
Complexity	8.49 ⭐	7.75 ⭐	-0.74 👍
Method Length	94.38 🙂	86.35 🙂	-8.03 👍
Working memory	8.58 🙂	7.64 🙂	-0.94 👍
Quality	58.69% 🙂	63.79% 🙂	5.10% 👍

Other metrics	Before	After	Change
Lines	252	412	160

Changed files	Quality Before	Quality After	Quality Change
nowplaying/upgrade.py	58.69% 🙂	63.79% 🙂	5.10% 👍

Here are some functions in these files that still need a tune-up:

File	Function	Complexity	Length	Working Memory	Quality	Recommendation
nowplaying/upgrade.py	UpgradeConfig.upgrade	16 🙂	322 ⛔	11 😞	35.78% 😞	Try splitting into smaller methods. Extract out complex expressions
nowplaying/upgrade.py	UpgradeTemplates.setup_templates	12 🙂	188 😞	9 🙂	49.90% 😞	Try splitting into smaller methods
nowplaying/upgrade.py	UpgradeBinary.get_versions	15 🙂	139 😞	8 🙂	54.33% 🙂	Try splitting into smaller methods
nowplaying/upgrade.py	Version.__lt__	11 🙂	183 😞	5 ⭐	60.80% 🙂	Try splitting into smaller methods
nowplaying/upgrade.py	UpgradeTemplates.__init__	4 ⭐	144 😞	8 🙂	63.85% 🙂	Try splitting into smaller methods

Legend and Explanation

The emojis denote the absolute quality of the code:

• ⭐ excellent
• 🙂 good
• 😞 poor
• ⛔ very poor

The 👍 and 👎 indicate whether the quality has improved or gotten worse with this pull request.

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