ugrep v3.12.0

New ug+ and ugrep+ commands to search pdfs, documents and image metadata when the corresponding tools are installed; improved --filter option; speed improvements.

Ugrep runs faster than grep and ripgrep on Apple Silicon M1 and x64 machines for most common searches, such as searching for a few words to tens and hundreds of words in large files. It depends on the available hardware and the complexity of the search patterns.