v0.3.0

Gogeta v0.3.0

Diff since v0.2.0

Added partition-based neural network formulation and experimental support for input convex neural networks. Support for importing model parameters as JSON files. Improved use of NN surrogates with anonymous variables.
Improvements to the documentation and code examples.

Merged pull requests:

• Marina (#27) (@kankeinai)
• removed print statement from sampling.jl (#28) (@mamorim00)
• Icnns (#29) (@EetuReijonen)
• ICNNs and partition-split formulation (#31) (@EetuReijonen)