Verilator 4.108 2021-01-10 released

[wsnyder]

Verilator 4.108 2021-01-10 released

Major:

• Many VPI changes for IEEE compatibility, which may alter behavior from previous releases.

Minor:

• Support randomize() class method and rand (verilator/verilator#2607). [Krzysztof Bieganski]
• Support $cast and new CASTCONST warning.
• Add --top option as alias of --top-module.
• Add LATCH and NOLATCH warnings (verilator/verilator#1609) (verilator/verilator#2740). [Julien Margetts]

Other:

• Remove Unix::Processors internal test dependency.
• Report UNUSED on parameters, localparam and genvars (verilator/verilator#2627). [Charles Eric LaForest]
• Add error on real to non-real output pins (verilator/verilator#2690). [Peter Monsson]
• Support package imports before parameters in interfaces (verilator/verilator#2714). [James Hanlon]
• Support --sanitize in internal tests (verilator/verilator#2705). [Yutetsu TAKATSUKASA]
• Fix passing parameter type instantiations by position number.
• Fix DPI open array handling issues.
• Fix error when dotted refers to missing module (verilator/verilator#2095). [Alexander Grobman]
• Fix little endian packed array counting (verilator/verilator#2499). [phantom-killua]
• Fix showing reference locations for BLKANDNBLK (verilator/verilator#2170). [Yuri Victorovich]
• Fix genblk naming to match IEEE (verilator/verilator#2686). [tinshark]
• Fix VPI memory word indexing (verilator/verilator#2695). [Marlon James]
• Fix vpiLeftRange on little-endian memories (verilator/verilator#2696). [Marlon James]
• Fix VPI module tree (verilator/verilator#2704). [Todd Strader]
• Fix vpi_release_handle to be called implicitly per IEEE (verilator/verilator#2706).
• Fix to allow inheriting 'VerilatedVcdFile' class. (verilator/verilator#2720) [HyungKi Jeong]
• Fix $urandom_range maximum value (verilator/verilator#2723). [Nandu Raj]
• Fix tracing empty sc module (verilator/verilator#2729).
• Fix generate for unrolling to be signed (verilator/verilator#2730). [yanx21]
• Fix to emit timescale in hierarchical blocks (verilator/verilator#2735). [Yutetsu TAKATSUKASA]
• Fix to ignore coverage on real ports (verilator/verilator#2741) (verilator/verilator#2745). [Paul Wright]