v4.0.0 (Sonic SFC)

• Removes Opera network specific code
• Removes stake locking
• Merges SFC and SFClib contracts
• Remove MinGasPrice calculation (to be done independently in Sonic)

Full Changelog: v3.0.5-rc.2...v4.0.0

v3.0.5-rc.2

• Add method for liquidating leftover sFTM by @uprendis in #62
• Erase FTM minting by @uprendis in #63
• Add withdrawTo method by @uprendis in #65
• Add multipenalties support by @uprendis in #67
• Authentication improvements by @uprendis in #68
• Improve redirection by @uprendis in #69

Full Changelog: v3.0.4-rc.4...v3.0.5-rc.2

v3.0.4-rc.4

• Forbid rewards claiming with outstanding sFTM balance (#54)

v3.0.4-rc.3

• Forbid sFTM minting (#52)
• Forbid accidental incoming FTM transfers (#51)
• Add hardhat support (#49)