Cleanup and resubmit several PRs

[idbrii]

This PR includes no novel commits. I've taken several of the most promising PRs
(especially those with tests or resolved feedback) and merged them all together. Some of them I've improved by applying your
review feedback.

• Adding search option to log_default along with test case -- Adding search option to log_default along with test case #120
• added "remove" command -- added "remove" command #83 (auth documentation only)
• Added propset(); added no_ignore option to status(); fixed bug in properties() -- Added propset(); added no_ignore option to status(); fixed bug in properties() #121 (and add to readme)
• add svn blame support -- add svn blame support #131 (squashed and fixed test)
• svn status can now include changelists' items -- svn status can now include changelists' items #133 (squash and remove irrelevant changes)
• Hide command prompt on Windows when running subprocess. -- Hide command prompt on Windows when running subprocess. #136 (squash)
• Improved diff and properties -- Improved diff and properties #99 (squash, trailing whitespace)

This PR serves partly as a way to get these PRs submitted, but also as way to share my effort in collecting fixes for myself.

All tests pass for me locally.

$ python3 -m unittest 
............../svn/common.py:262: DeprecationWarning: This method will be removed in future versions.  Use 'list(elem)' or iteration over elem instead.
  entry_info = {x.tag: x.text for x in e.getchildren()}
..../svn/common.py:262: DeprecationWarning: This method will be removed in future versions.  Use 'list(elem)' or iteration over elem instead.
  entry_info = {x.tag: x.text for x in e.getchildren()}
...../svn/common.py:262: DeprecationWarning: This method will be removed in future versions.  Use 'list(elem)' or iteration over elem instead.
  entry_info = {x.tag: x.text for x in e.getchildren()}
.....
----------------------------------------------------------------------
Ran 25 tests in 55.991s

OK

[coveralls]

Coverage increased (+6.3%) to 77.75% when pulling a1c68c4 on idbrii:collapse-all-pr into 4055a93 on dsoprea:master.

[idbrii]

Travis failed due to failing to install python3.3. Is it always broken? Will it retry?

0.10s$ curl -sSf --retry 5 -o python-3.3.tar.bz2 ${archive_url}
curl: (22) The requested URL returned error: 404 Not Found
Unable to download 3.3 archive. The archive may not exist. Please consider a different version.

[idbrii]

Since this doesn't merge cleanly anymore and there was a big diff rewrite, the PRs probably need to be cleaned up again. Cherry picking from this PR might help, but I'm not going to attempt to fix them all again. Closing.