Release 0.0.53

See #904, release log:

• b48ba0c by @rultor: 0.0.54-SNAPSHOT
• 3e1ceee by @amihaiemil: Merge pull request #907 from a...
• ee8a28e by @amihaiemil: #906 invoices improvements
• 331f6ba by @amihaiemil: Merge pull request #901 from a...
• f38ae0e by @amihaiemil: Merge pull request #905 from a...
• 29557f3 by @amihaiemil: #903 core.platformInvoices
• fb50b6c by @andreoss: (#895) Fix test
• 68692bf by @andreoss: (#895) Accept OutputStream i...

Released by Rultor 1.69.1, see build log