03/31/2019: v0.0.14 - Fix used document filter flag when false
03/16/2019: v0.0.13 - Implemented passing in the command as an argument
03/14/2019: v0.0.12 - Improvement: Add option to always use a file's dir as current working
08/30/2018: v0.0.11 - Better working directry handling.
07/28/2018: v0.0.10 - Better error reporting. In case command exited with failure status, and leave only error messages without stdout, don't change text selection but pop an error message instead. When filter on empty document (zero bytes), need to close stdin to avoid child process reading stdin never terminate (dangling).
07/22/2018: v0.0.9 - Added support and settings for using bash's commands or scripts
01/25/2018: v0.0.8 - Set current working directory for the command to match the opened directory
01/14/2018: v0.0.7 - Set current working directory for the command to match the opened directory
12/25/2017: v0.0.6 - Pipe support
07/20/2017: v0.0.5 - Make temp buffer a vscode tmp doc instead of system tmp file
07/19/2017: v0.0.4 - Allow filter buffer if no selection
04/01/2017: v0.0.3 - Added ability to feed result into temp file
11/24/2015: v0.0.2 - Changed the keybindg from Ctrl+Shift+F to Ctrl+K Ctrl+F.