cgohlke/ptufile: v2026.3.21

Read and write PicoQuant PTU and related files

Ptufile is a Python library to

1. read data and metadata from PicoQuant PTU and related files (PHU, PCK, PCO, PFS, PUS, PQRES, PQDAT, PQUNI, SPQR, and BIN), and
2. write TCSPC histograms to T3 image mode PTU files.

PTU files contain time correlated single photon counting (TCSPC) measurement data and instrumentation parameters.

Changes

• Add bounds checking to encode_t3_image function.
• Use format-dispatch in hot decode loops to allow compiler inlining.
• Build wheels on Windows with LLVM (30% faster decoding than MSVC).
• Drop support for Python 3.11.