don't yield blank lines

Fixes for flake8

Next rules were broken
* E265 block comment should start with '# '
* E713 test for membership should be 'not in'

parse_repository_tag function and accompanying test

Use Requests.iter_lines to fix #176

The previous code had a bug in which it assumed that the chunk data had
no newlines in it.  In 0.9.0 newlines were added to the stream results,
which exposed this bug.

Fix API version comparison for 1.10

Use different requirements list on Python 2 and 3 (fixes #174)

Support 'Domainname' in container creation

In Python 3 websocker-client not required (and previously requiested
version doesn't work at all).

Fix install instructions (closes #169)

add __title__ and __version__ variables to module

Fix build() and events() streaming

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>

Fix APIError for requests 1.1

requests 1.1, which is what's available on CentOS 6, doesn't support
passing the response code as a keyword argument.  It can be set after
the fact on both requests 1.1 and 1.2.

Docker-DCO-1.1-Signed-off-by: Chris St. Pierre <chris.a.st.pierre@gmail.com> (github: stpierre)

Support remote API v1.8 (and make it the default)

Signed-off-by: Maxime Petazzoni <max@signalfuse.com>

Fixed malformatted request when using empty list in create_container()

create_container() sends a malformatted request when volumes==[] or
ports==[], causing error 500 "create: ExportEnv json: cannot unmarshal
array into Go value of type map"

The empty lists must be converted into a dict (or removed)

Allow copy() to accept dictionary like diff()