devel/got: update to 0.99

User-visible changes:

• make 'got fetch' work with URLs which refer to $HOME via a tilde: ~user
• fix spurious errors from got-fetch-http when server has no more data to send
• back out got stage -R option addition; deemed too inconvenient in practice
• fix got-fetch-http GET request URL; add leading slash and avoid double slashes
• fix endless loop upon Ctrl-D (EOF) input during got stage/unstage/revert -p
• make got stage -p behave the same way in interactive and -F modes for 'q'