graphviz syntax error generated by Sphinx 1.2b1

After fixing #935, this other bug was revealed beneath.  It's probably "upstream fix required" but I'm adding it here so we can track our compatibility with Sphinx 1.2.

```
WARNING: dot code 'digraph inheritancee1541eba43 {\nrankdir=LR;\nsize="8.0, 12.0";\n  "astropy.time.core.ScaleValueError" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.ScaleValueErr
or.html#astropy.time.core.ScaleValueError",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeUnix" [style="setli
newidth(0.5)",URL="../_generated/astropy.time.core.TimeUnix.html#astropy.time.core.TimeUnix",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Unix time: seconds fro
m 1970-01-01 00:00:00 UTC.",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeFromEpoch" -> "astropy.time.core.TimeUnix" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.T
imeISO" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeISO.html#astropy.time.core.TimeISO",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="ISO
 8601 compliant date-time format "YYYY-MM-DD HH:MM:SS.sss...".",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeString" -> "astropy.time.core.TimeISO" [arrowsize=0.5,style="setlinewidth
(0.5)"];\n  "astropy.time.core.OperandTypeError" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.OperandTypeError.html#astropy.time.core.OperandTypeError",fontname="Vera Sans, DejaVu 
Sans, Liberation Sans, Arial, Helvetica, sans",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeEpochDate" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeEpochDate.h
tml#astropy.time.core.TimeEpochDate",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Base class for support floating point Besselian and Julian epoch dates",height
=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeFormat" -> "astropy.time.core.TimeEpochDate" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeEpochDateString" [style="setl
inewidth(0.5)",URL="../_generated/astropy.time.core.TimeEpochDateString.html#astropy.time.core.TimeEpochDateString",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip=
"Base class to support string Besselian and Julian epoch dates",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeString" -> "astropy.time.core.TimeEpochDateString" [arrowsize=0.5,style="
setlinewidth(0.5)"];\n  "astropy.time.core.TimeFromEpoch" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeFromEpoch.html#astropy.time.core.TimeFromEpoch",fontname="Vera Sans, Deja
Vu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Base class for times that represent the interval from a particular",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeFormat" ->
 "astropy.time.core.TimeFromEpoch" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeBesselianEpochString" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeBesse
lianEpochString.html#astropy.time.core.TimeBesselianEpochString",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Besselian Epoch year as string value(s) like \'B19
50.0\'",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeEpochDateString" -> "astropy.time.core.TimeBesselianEpochString" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core
.TimeDelta" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeDelta.html#astropy.time.core.TimeDelta",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tool
tip="Represent the time difference between two times.",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.Time" -> "astropy.time.core.TimeDelta" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "
astropy.time.core.TimeFormat" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeFormat.html#astropy.time.core.TimeFormat",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, H
elvetica, sans",tooltip="Base class for time representations.",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeCxcSec" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.Ti
meCxcSec.html#astropy.time.core.TimeCxcSec",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Chandra X-ray Center seconds from 1998-01-01 00:00:00 TT",height=0.25,s
hape=box,fontsize=10];\n  "astropy.time.core.TimeFromEpoch" -> "astropy.time.core.TimeCxcSec" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeJulianEpochString" [style="setlinewi
dth(0.5)",URL="../_generated/astropy.time.core.TimeJulianEpochString.html#astropy.time.core.TimeJulianEpochString",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="
Julian Epoch year as string value(s) like \'J2000.0\'",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeEpochDateString" -> "astropy.time.core.TimeJulianEpochString" [arrowsize=0.5,style
="setlinewidth(0.5)"];\n  "astropy.time.core.TimeDeltaJD" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeDeltaJD.html#astropy.time.core.TimeDeltaJD",fontname="Vera Sans, DejaVu S
ans, Liberation Sans, Arial, Helvetica, sans",tooltip="Time delta in Julian days (86400 SI seconds)",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeDeltaFormat" -> "astropy.time.core.T
imeDeltaJD" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeDatetime" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeDatetime.html#astropy.time.core.TimeDate
time",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Represent date as Python standard library `~datetime.datetime` object",height=0.25,shape=box,fontsize=10];\n 
 "astropy.time.core.TimeUnique" -> "astropy.time.core.TimeDatetime" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeString" [style="setlinewidth(0.5)",URL="../_generated/astropy.
time.core.TimeString.html#astropy.time.core.TimeString",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Base class for string-like time represetations.",height=0.2
5,shape=box,fontsize=10];\n  "astropy.time.core.TimeUnique" -> "astropy.time.core.TimeString" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeJD" [style="setlinewidth(0.5)",URL="
../_generated/astropy.time.core.TimeJD.html#astropy.time.core.TimeJD",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Julian Date time format",height=0.25,shape=bo
x,fontsize=10];\n  "astropy.time.core.TimeFormat" -> "astropy.time.core.TimeJD" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeYearDayTime" [style="setlinewidth(0.5)",URL="../_g
enerated/astropy.time.core.TimeYearDayTime.html#astropy.time.core.TimeYearDayTime",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Year, day-of-year and time as "Y
YYY:DOY:HH:MM:SS.sss...".  The",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeString" -> "astropy.time.core.TimeYearDayTime" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.tim
e.core.TimeJulianEpoch" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeJulianEpoch.html#astropy.time.core.TimeJulianEpoch",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Aria
l, Helvetica, sans",tooltip="Julian Epoch year as floating point value(s) like 2000.0",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeEpochDate" -> "astropy.time.core.TimeJulianEpoch" 
[arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimePlotDate" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimePlotDate.html#astropy.time.core.TimePlotDate",fontna
me="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Matplotlib `~matplotlib.pyplot.plot_date` input: 1 + number of days from 0001-01-01 00:00:00 UTC",height=0.25,shape=box,f
ontsize=10];\n  "astropy.time.core.TimeFromEpoch" -> "astropy.time.core.TimePlotDate" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeUnique" [style="setlinewidth(0.5)",fontname=
"Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Base class for time formats that can uniquely create a time object",height=0.25,shape=box,fontsize=10];\n  "astropy.time.cor
e.TimeFormat" -> "astropy.time.core.TimeUnique" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeDeltaSec" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeDelt
aSec.html#astropy.time.core.TimeDeltaSec",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Time delta in SI seconds",height=0.25,shape=box,fontsize=10];\n  "astropy
.time.core.TimeDeltaFormat" -> "astropy.time.core.TimeDeltaSec" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeISOT" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.c
ore.TimeISOT.html#astropy.time.core.TimeISOT",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="ISO 8601 compliant date-time format "YYYY-MM-DDTHH:MM:SS.sss...".",he
ight=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeString" -> "astropy.time.core.TimeISOT" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.Time" [style="setlinewidth(0.5)",U
RL="../_generated/astropy.time.core.Time.html#astropy.time.core.Time",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Represent and manipulate times and dates for 
astronomy.",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeBesselianEpoch" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeBesselianEpoch.html#astropy.time.core.Tim
eBesselianEpoch",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Besselian Epoch year as floating point value(s) like 1950.0",height=0.25,shape=box,fontsize=10];\n
  "astropy.time.core.TimeEpochDate" -> "astropy.time.core.TimeBesselianEpoch" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeMJD" [style="setlinewidth(0.5)",URL="../_generated/a
stropy.time.core.TimeMJD.html#astropy.time.core.TimeMJD",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Modified Julian Date time format",height=0.25,shape=box,fo
ntsize=10];\n  "astropy.time.core.TimeFormat" -> "astropy.time.core.TimeMJD" [arrowsize=0.5,style="setlinewidth(0.5)"];\n  "astropy.time.core.TimeDeltaFormat" [style="setlinewidth(0.5)",URL="../_gene
rated/astropy.time.core.TimeDeltaFormat.html#astropy.time.core.TimeDeltaFormat",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial, Helvetica, sans",tooltip="Base class for time delta represent
ations",height=0.25,shape=box,fontsize=10];\n  "astropy.time.core.TimeFormat" -> "astropy.time.core.TimeDeltaFormat" [arrowsize=0.5,style="setlinewidth(0.5)"];\n}\n': dot exited with error:
[stderr]
Error: <stdin>:7: syntax error near line 7
context:   "astropy.time.core.TimeISO" [style="setlinewidth(0.5)",URL="../_generated/astropy.time.core.TimeISO.html#astropy.time.core.TimeISO",fontname="Vera Sans, DejaVu Sans, Liberation Sans, Arial
, Helvetica, sans",tooltip="ISO 8601 compliant date-time format >>>  "YYYY- <<< MM-DD HH:MM:SS.sss...".",height=0.25,shape=box,fontsize=10];

[stdout]

```