6.0 Experimental Changes

- Implemented Multistrike and Readiness relying on placeholder values.
- Cleaned up spec scripts.
- Removed 5.4 trinket code, assuming they shift to the new stats with
6.0.
- Removed t14 and t15 tier bonuses.
- Improved spec specific proc rate handling?
- Deleted get_self_healing() and get_max_health() methods. No one was
using them anyways.
- Cleaned up rogue module global values.
- Fixed minor proc_data typos/misplacements

- Shadow Blades has not yet been removed. It will disappear when I see
what the spec rotations will look like in beta and get to work on them
then.