SiFive Internal Release 1.5.0

What's Changed

• [PyCDE] Add Matrix class by @mortbopet in #3369
• ExtractInstances: fix memory safety issue re:DenseMap by @dtzSiFive in #3385
• DropNames: Add statistic, fixup test by @dtzSiFive in #3379
• [FSM] Remove statetype from MachineOp by @mortbopet in #3382
• [PyCDE] Make module creation, generation generic by @mortbopet in #3383
• [Docs] Fix markdown link by @tymcauley in #3393
• [FIRRTL] Use Minimal XMRs in GCT Views by @seldridge in #3391
• [PyCDE] Improve various error messages by @mortbopet in #3376
• [PyCDE] Fix issue in slice index generation by @mortbopet in #3396
• [PyCDE] Flip NDArray before conversion by @mortbopet in #3395
• [FIRRTL] Set droppable names to temporary wires by @uenoku in #3399
• [FIRRTL] rework innerref verification, starting with HierPathOp. by @dtzSiFive in #3366
• [FIRRTL] EmitOMIR: Drop temporary HierPath's that may be invalid by @dtzSiFive in #3384
• [FIRRTL][Dedup] Pre-calculate the post-order of modules by @youngar in #3390
• [FIRRTL] Use relative XMRs in GCT Data/Mem Taps by @seldridge in #3401

Full Changelog: sifive/1/4/0...sifive/1/5/0