Completely revamp the grab source code

Some of the (many) few changes are:
- Multithreading for significantly faster performance
- The -p/--predicate flag
- Byte offsets as the default
- No customizable colors (maybe this will come back later)
- Newer edition of mlib (formerly librune)

1 files changed, 0 insertions, 0 deletions

diff --git a/vendor/mlib b/vendor/mlib
new file mode 160000
+Subproject 5dbf53a1c512f9163744874e3d502e9f9e2808d