Log Message:
the_silver_searcher: Update to 2.2.0

Changes:
2.2.0
-----
 - Add support for Idris, APL and J
 - Add .r to R file extensions
 - Add file extensions for TLA+, Isabelle, Coq
 - Add support for D
 - Add support for PDB
 - Add support for thrift
 - Add filter for devicetree source files
 - Document -W/--width option in the man page
 - Add support for pug
 - Add support for terraform files
 - Misc bug fixes and improvements