Martian Castle Robot

This is a giant Martian Castle Robot, and the dakka dakka dakka version to boot.

Updates:
* May 14th, 2019: Arms/legs/hip updated to 0.2 Arms and legs need to be mirriored.
* May 19th, 2019: Split torso and shoulder weapon. Fixed STLs and updated to 0.2.
* May 21st, 2019: Split leg into upper/lower parts, filled in gaps, and remeshed low poly sections. Updated to 0.3.
* May 24th, 2019: Upgraded all parts to 0.4 rev. (remeshed/ smoothed lots of low poly shells). I still need to do some work to make the parts more printable.
* June 26th, 2019: I will no longer be working on this version of the model, unless someone finds a critical printing flaw. I have moved my efforts to a ground up remodel here: https://www.thingiverse.com/thing:3715936

My current plan:
v0.1 - initial revision, split into large components.
v0.2 - general STL fixes, ensure minimum print-ability.
v0.3 - better component split for printing (weapons, battery, etc).
v0.4 - remesh of the low