[Service] Thunderhub 0.13.13

[elvece]

• [x] Updated to latest upstream version
• [x] Converted to use JS procedures
• [x] Instructions updated/accurate
• [x] Release notes accurate
• [x] Migration(s) tested, if applicable
• [x] Merged to master
• [x] Release tag cut

[elvece]

@cryptodread @dr-bonez

• [x] properties fix
• [x] lib import for set config - [x] treat proxy fetch blocks undefined as true

[islandbitcoin]

does proxy fetch blocks apply to this service? I don't think TH uses proxy.

[islandbitcoin]

@elvece updated with health-chk fix and pushed to alpha and beta.