[ENH] add residuals to LSS/LSA interfaces

[jdkent]

Summary

Fixes #293 .

List of changes proposed in this PR (pull-request)

• bumps nistats version to include residual retrieval
• adds residuals to interfaces
• adds more in depth testing of LSS/LSA outputs

[codecov[bot]]

Codecov Report

Merging #294 into master will increase coverage by 0.18%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #294      +/-   ##
==========================================
+ Coverage   89.33%   89.52%   +0.18%     
==========================================
  Files          10       10              
  Lines         722      735      +13     
  Branches      109      110       +1     
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+ Hits          645      658      +13     
  Misses         45       45              
  Partials       32       32