Multiple headers TODO.
.gitignore
Removed the management command.

It means that:

    httpie session list
    httpie session edit
    ...

are gone.

It has never been part of a stable release, and since it wasn't
a very useful feature, it's beeing removed now to avoid feature creep.
Added new logo by @claudiatd :sparkles:
v0.4.0
Updated README.
Removed a reference to the removed `httpie` command

Closes #131
v0.4.1
Initial --download implementation (#104).

Closes #127
Fixed unique suffix placement for URLs with a file extension.
Fixed streaming (closes #133)
Handle downloads with no Content-Length.
Fixed PyPy cookie updating issue
Merge pull request #135 from Scorpil/master

Fixed PyPy cookie updating issue

Closes #132
Formatting
Corrected session info in the README.
Progress on --download.
--json with no data sets Content-Type as well

Closes #137