v0.18.0

• ⚖ Tune PSQT (#414, #415, #417)
• 🔍 Add razoring (#429)
• 🔍 Add soft cap history moves score (#442)
• 🔍 Revisit and improve Aspiration Windows (#437)
• ⚡ Implement PEXT bitboards for bishop and rook attacks (#451)
• 🐛 Fix evaluation when checkmate is delivered at the same time 50 moves rule apply (#453)
• 🐛 Fix move ordering at high depths/LTC (#448, indirectly #442)
• 🐛 Avoid re-searches in IDDFS (#439)

Non-strength winning changes:

• ⚖ Normalize eval and add UCI_ShowWDL option (#421, #422)
• 🧹 Remove UseOnlineTablebaseInSearch from UCI (#441)

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Full Changelog: v0.17.0...v0.18.0