fixing issue with exec plugin
better docs for attach, fixes #28
returning null for empty model fetch - #21
docs tweaks, blank target for some external links
#30, allowing objects to be passed to query builder
Fix for #33, empty EagerRelation attachment, with tests.
Pivot column typo, fixes #31
minor docs tweaks
some docs cleanups
0.2.0
Merge branch 'master' into gh-pages

* master:
  0.2.0
  some docs cleanups
  minor docs tweaks
  Pivot column typo, fixes #31
  Fix for #33, empty EagerRelation attachment, with tests.
  #30, allowing objects to be passed to query builder
  docs tweaks, blank target for some external links
  returning null for empty model fetch - #21
  better docs for attach, fixes #28
  fixing issue with exec plugin