v5.2.4

Changes for 5.2.4:

• slightly faster default compile settings
• faster progress printing
• stop encoder with ctrl+c and properly close the MP3 output file
• improved encoder help text
• fixes for the resampler (downsampling now works again)
• -L option for limiting VBR maximum bitrate

v5.2.3

Just have a tag for version 5.2.3