Update to v1.4.15

• Amplitude threshold condense selected action, enter an upper and lower amplitude value (between 0 and 1), the sample will be modified to only include amplitudes within the given range, gaps between the audio is removed condensing the sample size.
• Ctrl + Click on Filename column header to sort the list by numeric filename content only.
• Improved drop file order consistency.
• Allow dropping mp3 files.
• If sample has slice information, the slices will be shown on the waveform when the slice panel opens.
• Support multi-touch for selecting/deselecting samples.
• Minor UI bug fixes, scaling, responsiveness improvements on button interactions.