v1.8.13

What's Changed

• Swish report by @Olverine in #15
• updated swish4j dependency by @Olverine in #16
• Updated swish report conversion by @Olverine in #17
• Conversion between dates by @Olverine in #18
• Using Apache commons csv to parse ratepay reports by @Olverine in #19
• Using new version of fortnox4j by @Olverine in #20
• Using file credentials provider by @Olverine in #21
• Remove credentials implementation by @Olverine in #22
• Legacy access token retrieval by @Olverine in #25
• persisting new fortnox clients by @Olverine in #26
• Possible fix for token renewal error by @Olverine in #27
• Using custom client secret if available by @Olverine in #28
• Dicontinued use of LegaceTokenCredentials Provider and added Credentials info to ShowSupportInfo by @Olverine in #29
• Credentials expiration checking by @Olverine in #30

Full Changelog: v1.8.11...v1.8.13