Framsticks

Fixed error messages, changed int to paInt (for 32/64-bit safety), changed two int variables to bool as they should be

Printfs replaced with error messages.

Nonexistent function declaration removed.

Added another, improved way of calculating dissimilarity of two creatures/models. Details and comparisons in ​https://doi.org/10.1007/978-3-030-16692-2_8

Added two methods for dictionary iteration: for(x in dict) and for(x in dict.keys)