CavityTools v1.2.1

Diff since v1.2.0

This release

Makes the interface of ExponentialQueue match the one of ExponentialQueueDict
Allow arbitrary collections and iterators as arguments to the ctors
Match the API of AbstractExponentialQueue{T} math the one of AbstractDict{T,Float64}

Merged pull requests:

• Abstractvector (#16) (@abraunst)