PayButton-Server v2.0.0

Introduced basic support for OP_RETURN and Payment IDs, fleshed out the project readme, build improvements, UI/UX improvements, and misc optimizations & bug fixes.

What's Changed

• fix: cache whole address before caching single tx if no cache present by @chedieck in #753
• chore: openssl1.1 was deprecated by @chedieck in #757
• [#743] ui - show scrollbars by @johnkuney in #756
• [#751] UI: Add get address link to button generator by @johnkuney in #755
• chore: new address automatically seeded by @chedieck in #758
• [#732] fix: avoid tx holes by @chedieck in #754
• [#732] feat: possibility to fully sync addresses by @chedieck in #764
• [#772] feat: delete triggers & better UX by @chedieck in #775
• feat: update README by @chedieck in #778
• [#774] feat: basic OP_RETURN parsing by @chedieck in #782
• [#774] feat: op return variable on triggers by @chedieck in #783
• feat: scripts waits for DB connection by @chedieck in #786
• [#774] feat: op return new specs by @chedieck in #789
• [#774] feat: read opreturn data as utf8 by @chedieck in #790
• chore: add seeds for better development related to triggers by @chedieck in #791
• Fix/windows env crlf by @Klakurka in #793
• refactor: rename nonce -> paymentId by @chedieck in #792
• [#774] feat: try to parse it as JSON by @chedieck in #795
• [#774] feat: broadcast parsed op return by @chedieck in #797

Full Changelog: 1.0.2...2.0.0