Fix weights for L = 1 & L = N
Fix 2d plot breaks in case of field has no variation
Merge pull request #107 from eodus/plot2d_fix

Fix 2d plot breaks in case of field has no variation
Merge pull request #106 from eodus/weights_fix

Fix weights for L = 1 & L = N
Add `fill.color` parameter
Add triangle mask

Specially for Kostya
Document `fill.color'
Merge pull request #108 from eodus/fill_color

Add `fill.color` parameter
Document `triangle' expression
Merge pull request #110 from eodus/triangle_mask

Triangle mask
Early version of M-SSA. Somehow works...
Unbreak the usual SSA
Add lrr and rforecast (L-forecast) for mssa
First cut of complex SSA
Use proper number of eigenvalues for complex SSA
Speedup
Speedup hmat-building in `decompose.mssa.eigen'
Fix hmat-building in `decompose.mssa.svd'
Add support for unequal series lengths for MSSA. Along the lines:

1. Introduce new kind of "elementary series": series list. Overload the arithmetic ops on it
2. Streamline the hanlding of attributes
3. Get rid of .slength
4. Make sure the common methods do no decisions about e.g. contents
5. Cleanups here and there
Implement fixup for .apply.attributes