Fixed behaviour of Plot with list of functions (including nested lists)
Improved handling of list and dummy arguments
Revert "Fixed expected result in added test"

This reverts commit 0f8f39e71fc912b8a5e4db1323041f3602f7192c.
Revert "Added test relative to issue #184"

This reverts commit 1684ec3136e90d3181985bf6c2f8aef2d5c00ba3.
Revert "Removed unnecessary Module block"

This reverts commit d66bf3e0448e3e3b95a4e2fe0ccefdc111dde07a.
Revert "Possible fix for D[Cos[t],t] behaviour"

This reverts commit 11c6eecf77718e697e38348037131eb2912d12af.
Merge pull request #189 from GitAnt/plot_branch

Fixes behaviour of plot with defined symbols (addresses #150)