Preparing for 1.0

[TheLastProject]

Pext has gotten rather far and stable, so it's about time for a 1.0 release.

Checklist of things that should be supported before it:

• Internationalisation support for module metadata
• Moving selection_made calls into a thread so modules can't lock the UI up there (be very careful here to not break anything!) dd4056b
• Ensure the API can't crash Pext with bad input
• Update checking for Pext itself, at least to notify about new versions (possibly disable in AppImage due to native support) 0fcd40a

Great to have before the release but not required:

• AppImage (see AppImage packaging #31)

• Working macOS .app (see Standalone macOS app #27)

• Windows installer

• Automatic module updates (on/off for checking and auto-updating in UI)

When all of the above (aside perhaps the great to haves) are done:

• Translations 100% (not required)

[TheAssassin]

I'm sure we'll be able to release AppImages soon.

[TheLastProject]

Looks like I'll be releasing a v0.10 before this, as I found a few major bugs. v1.0 will probably then focus on finishing the last lacking bit of localization and packaging for all platforms.

[TheLastProject]

On that note, @Pext/translators, seeing how v0.10 may drop in the coming days, this is the time to update your translations if you get the chance.

[TheLastProject]

This got split into one issue per thing, going to close this now for organisational reasons.