Semux v2.2.0

This release brings in various bugfixes and enhancements to Semux Core. A full sync is recommended after upgrading.

Bug fixes:

• Fixed a bug which allows state change of failed transactions

Enhancements:

• Removed deprecated APIs and bumped the version to v2.5.0
• Added more seed nodes
• Enabled FAST_SYNC by default
• Added support for HiDPI displays
• Improved UX by merging Send and Smart Contract panels and simplifying HD initialization process
• Added support for configuring min gas price and max gas limit