Gqrx SDR 2.15.10

• New: Restore FFT zoom level between sessions.
• New: Restore peak detect & peak hold between sessions.
• New: "Z" keyboard shortcut sets frequency offset to zero.
• Fixed: Remove empty frame from bottom of I/Q tool window.
• Fixed: Sudden scrolling of file list in I/Q tool window.
• Fixed: Reset zoom slider after right click on panadapter / waterfall.
• Fixed: Aliasing when input rate is higher than 2 Msps.
• Improved: AGC performance.
• Improved: WFM stereo & OIRT performance.
• Improved: I/Q swap performance.
• Improved: Apply amplitude normalization to FFT window functions.