Adds a GET/POST toggle. Queries too long for the server's URL limit — which failed with "414 Request-URI Too Large" — can now be sent as POST, with the parameters in the request body. Each tab remembers its own parameters and its own GET/POST choice, and keeps them across a browser restart. Requires Firefox 58 or later.

More conservative (custom) URI encoding/decoding, fixes some correctness issues.
Support for Wheel-Click and Shift-Click to open the link in the next tab.

v.1.0.1 - move delete buttons to not be obstructed by the scrollbar.