Adding in map reading/writing class and updates to various gui components, trying to get rotation working but failing so far

adding in gauss_param object. Although it doesn't inherit from a complex type it can be used as one in equations as it overrides the various options

objects that have properties dynamically added to themselves need to declare themselves as new classes, with a base class of the original. Otherwise when we add properties we add them to all instances.

adding in more support for nodes. Can now access any node using kat.nodes.n1. Added in functions for Node object to set the gauss parameters. Only added gauss for w0 and z so far.

Adding in more parsing for finesse commands. Can no specify a chunk of finesse codee. Various other fixes included too. Currently GUI isn't working.