v0.2.2-alpha

Pre-release including support for macosx (no binary yet -- help wanted), IO improvements and several bug-fixes.
Windows binaries:

• Super4PCS-v0.2.2-x64.zip: standalone binaries packaged with opencv310 (RECOMMENDED),
• Super4PCS-v0.2.2-x64.exe: standalone binary.

Complete changelog

New functionalities

• 84d079e Add .ptx loader (see https://github.com/nmellado/Super4PCS/wiki/File-formats#ptx-84d079e)
• 9e0bf8d, 2c92b29 Add new matrix output, to save the computed matrix to a file (see https://github.com/nmellado/Super4PCS/wiki/File-formats#transformation-matrices-2c92b29)
• a379569, 3f3b150 Add macosx compilation support (#23)
• 5faec54 Add support for double properties in ply ASCII files
• ed916df Add option to save subsampled clouds used for registration

Bug fixes

• 0c74d2a Fix invalid eof detection for point clouds
• c4cc611, 4b1ab6a, Fix color management (#16)
• 7cc35e0, Fix IO errors for ply files (#13)

Other changes

• 6e76b73 Update kdtree API to request either indices or position in query dist.

Minor changes

• e80e59a Compute timings using CLOCKS_PER_SEC instead of adhoc values
• 292319c Temporary remove hsv cached color (unused in other parts of the code)
• 2d7073b Disable compilation warning for windows