For Houdini 17.0

From here you can install the add-on manually.

Drop VEX.sublime-package file into Data/Installed Packages

Example:
C:\Users\teared\AppData\Roaming\Sublime Text 3\Installed Packages\VEX.sublime-package

Then follow the rest of the readme, including optional setup sections.

Release 7.1.0

1. Updated for Houdini 17.0.
   VEX changes: https://www.sidefx.com/docs/houdini17.0/news/17/vex.html

2. New VEX functions added:

   agentsolvefbik
   attribdataid
   chop
   chopt
   diagonalizesymmetric
   expandvertexgroup
   getpackedtransform
   islpeactive
   packedtransform
   pxnoised
   random_poisson
   sample_circle_ring_uniform
   sample_sphere_shell_uniform
   setpackedtransform
   solvefbik
   surfacedist
   uniquevals

   Tip: to read about new functions quickly, copy the list in empty
   Sublime Text document, set VEX syntax and check documentation helpcards.