sdss/marvin: Marvin Beta 2.1.3

This patch release

• Issue #204: added elpetro_absmag colours to mangaSampleDB models.
• Issue #253: Plotting tutorial.
• Issue #223: Easy multi-panel map plotting (with correctly placed colorbars).
• Issue #232 and Issue #251: Uses matplotlib style sheets context managers for plotting (map, spectrum, and BPT) and restores previous defaults before methods finish.
• Issue #189: Map plotting accepts user-defined value, ivar, and/or mask (including BPT masks).
• Issue #252: Quantile clipping for properties other than velocity, sigma, or flux in web.
• Added utils.plot.map doc page.
• Added tools.map doc page.

• Issue #243: inverted __getitem__ behaviour for Cube/Maps/ModelCube and fixed tests.
• Modified Flask Profiler File to always point to $MARVIN_DIR/flask_profiler.sql
• Issue #241: Moved map plotting methods from tools/map to utils/plot/map
• Issue #229 and Issue #231: Switch to new gray/hatching scheme (in tools and web):
  • gray: spaxels with NOCOV.
  • hatched: spaxels with bad data (UNRELIABLE and DONOTUSE) or S/N below some minimum value.
  • colored: good data.
• Issue #238: Move plot defaults to datamodel (i.e., bitmasks, colormaps, percentile clips, symmetric, minimum SNR).
• Issue #206: SNR minimum to None (effectively 0) for velocity maps so that they aren't hatched near the zero velocity contour.
• Simplified default colormap name to "linearlab."
• Decreased map plot title font size in web so that it does not run onto second line and overlap plot.

• Interactive prompt for username in sdss_access now works for Python 3.
• Fixed #195: The data file for the default colormap for Map.plot() ("linear_Lab") is now included in pip version of Marvin and does not throw invalid FileNotFoundError if the data file is missing.
• Fixed #143: prevents access mode to go in to remote if filename is present.
• Fixed #213: shortcuts are now only applied on full words, to avoid blind replacements.
• Fixed #206: no longer masks spaxels close to zero velocity contour in web and tools map plots
• Fixed #229: corrects web bitmask parsing for map plots
• Fixed #231: hatch regions within IFU but without data in map plots
• Fixed #255: Lean tutorial code cells did not work with the ipython directive, so they now use the python directive.
• Highcharts draggable legend cdn.