Modified Makefile to use pass instead of gopass (gopasspw/gopass#1365)

Increase button contrast.

Fixes #2

Handle 0x7F for backspace.

Updated README.

Added version number to the arguments.

Made it possible to open files with the default browser.

Handle non UTF-8 encodings, and support file downloads for non-Gemini…

… content.

Add GITHUB_TOKEN password manager retrieval to the release Makefile.

Fixed issue when link lines use tabs instead of spaces. Now support b…

…oth.

Fix terminal style differences based on colour scheme.