BUG : fix fetch of freetype version during build

Use freetype-config --ftversion flag to get freetype version (previously
using freetype-config --version which returns libtool version).
restored default boxplot style and respect for the sym kwarg
fixed typos/formatting in docstrings
clean up whitespace
BUG : fix errors when using fliers

doplot for horizontal boxes (internal bxp helper function) assumes that
it will be passed an even number of positional arguments which it swaps
pair-wise.  The code to draw the fliers also passes in a format string
which breaks the assumption.

 - re-worked how `bxp` deals with the `sym` input
 - minor pep8
BUG : handle colors passed in via sym in bxp

If the user passes is the string 'ro' assume they want filled circles.
This is also the old behavior.
TST : drop 3.2, add 3.4
DOC : tweaked references to python versions
BUG : raise exception in subplot if num out of range

if subplot(rows, cols, num) is called with num not in
0 < num <= rows * cols raise a ValueError

close #3166
Properly deprecate num=0 in subplot related functions
Added 'PyQt4v2' to valid values for backend.qt4

Matching to what is allowed by the code in qt4_compat.py

Closes #2977
DOC : fixed errors in docstrings
MNT : Changed labeling to maintain back-compatibility

 changed labeling in cbook.box_plotstats to start at 1 to
 maintain back compatibility
Make type1font.py work better on Python 3.x

Communicate token types as objects instead of strings from the
tokenizer to the parser. Use proper Unicode strings for string-like
data in the font properties. Fix the handling of delimiters.

Resolves #3049.
DOC : grammar/history fixes
Add missing import of unichr from six.

Unichr is not defined in python3. This matches the usage in mathtext
Merge pull request #3208 from jenshnielsen/unichr_python3

Add missing import of unichr from six.
Merge pull request #3167 from tacaswell/subplot_index_fix

BUG : raise exception in subplot if num out of range
Merge pull request #3121 from tacaswell/qt4_validation

Added 'PyQt4v2' to valid values for backend.qt4
Credit Thomas A. Caswell.