Take large inputs in "init" block

[joejohnston203]

In a hierarchical model I have a parameter associated with each of the 4000 data points. Currently, in order to initialize those parameters to 0, I have an array with 4000 elements in the "stan.run.init" block.

Morpho could include a way to initialize a large array of parameters in one or both of the following ways:

• By optionally reading the initialization values from an input file
• By inputting the array length and the value of each element in the 'init' block