v1.3: specify window position

1. Glob functionality is improved by directly call powershell.
2. Now you can specify window position by --position 200,400 or --position mouse

v1.2 Glob support

Support glob for filenames
However, it's no longer a single-file exe.

v1.1

Add three features:

• press esc to quit;
• add -x command line argument to quit immediately after dragging;
• use -h or --help for help.

v1.0

The first release. Happy dragging!