fix url to the git repo

ftp: issue slightly smaller requests to please u9fs u9fs like to return "i/o count too large" on reads/writes that exceeds msize - 24. seems arbiratry, as in theory we should be able to issue a Tread/Twrite for msize - (HEADERSIZE + 4) = msize - 13. Don't know where the other eleven bits come from. To conclude the rant: even if a client issues a Tread/write too large, why don't just return a value smaller than requested? It's explicitly documented in the plan9 manpage for Tread.

ftp: allow user@host syntax; guard against empty user or port

specify that the syntax for the host optionally accepts a port number

add links to the shasums and current key

add a contributing and porting section on the readme

we don't have the 16K msize anymore

tag 0.2 * fix twstat handling of mode bits * rejects incoming connections with a ridiculously small msize * allow "jumbo" (i.e. more than 16K) Twrite and Treads * allow Tread to read exactly msize bytes * kamiftp: fix reads wrt msize * kamiftp: do maximum reads and writes

fix git link and add codeberg mirror

prepare the site for 0.2

rework & re-export Yotsuba

artwork for 0.2

declare a variable for the homepage image

- [regress] added test to write a file using a big buffer (msize).

simplify check in handle_message