Verilator

==========================

**Major:**

* Add GTKWave FST native tracing. (1356) [Sergi Granell]
(Verilator developers need to pull the latest vcddiff.)

**Minor:**

* Support $past. [Dan Gisselquist]
* Support restrict. (1350) [Clifford Wolf]
* Rename include/lxt2 to include/gtkwave.
* Fix replication of 64-bit signal change detects.
* Fix Mac OSX 10.13.6 / LLVM 9.1 compile issues. (1348) [Kevin Kiningham]
* Fix MinGW compile issues. (1979) [HyungKi Jeong]

==========================

**Major:**

* This is a major release. Any patches may require major rework to apply.
[Thanks everyone]
* Add multithreaded model generation.
* Add runtime arguments.
* Add GTKWave LXT2 native tracing. (1333) [Yu Sheng Lin]
* Note $random has new algorithm; results may vary vs. previous versions.

**Minor:**

* Better optimize large always block splitting. (1244) [John Coiner]
* Add new reloop optimization for repetitive assignment compression.
* Support string.atoi and similar methods. (1289) [Joel Holdsworth]
* Fix internals to be C++ null-pointer-check clean.
* Fix internals to avoid 'using namespace std'.
* Fix Verilation performance issues. (1316) [John Coiner]
* Fix clocker attributes to not propagate on concats. [John Coiner]
* Fix first clock edge and --x-initial-edge. (1327) [Rupert Swarbrick]
* Fix compile error on tracing of string arrays. (1338) [Iztok Jeras]
* Fix number parsing with newline after radix. (1340) [George Cuan]
* Fix string ?: conditional type resolution. (1345) [Iztok Jeras]
* Fix duplicate symbol error on generate tri. (1347) [Tomas Dzetkulic]

==========================

**Minor:**

* Add OBJCACHE envvar support to examples and generated Makefiles.
* Change MODDUP errors to warnings. (1969) [Marshal Qiao]
* Fix define argument stringification (`"), broke since 3.914. [Joe DErrico]
* Fix to ignore Unicode UTF-8 BOM sequences. (1967) [HyungKi Jeong]
* Fix std:: build error. (1322)
* Fix function inlining inside certain while loops. (1330) [Julien Margetts]

==========================

**Minor:**

* Renamed --profile-cfuncs to --prof-cfuncs.
* Report interface ports connected to wrong interface. (1294) [Todd Strader]
* When tracing, use scalars on single bit arrays to appease vcddiff.
* Fix parsing "output signed" in V2K port list, msg2540. [James Jung]
* Fix parsing error on bad missing . (1308) [Dan Kirkham]
* Fix $clog2 to be in verilog 2005. (1319) [James Hutchinson]

==========================

**Major:**

* Support IEEE 1800-2017 as default language.

**Minor:**

* Support trig functions ($sin() etc). (1281) [Patrick Stewart]
* Support calling system functions as tasks. (1285) [Joel Holdsworth]
* Support assert properties. (785) (1290) [John Coiner, et al]
* Support $writememh. [John Coiner]
* Add --no-debug-leak to reduce memory use under debug. [John Coiner]
* Fix severe runtime performance bug in certain foreach loops. [John Coiner]
* On convergence errors, show activity. [John Coiner]
* Fix GCC 8.0 issues. (1273)
* Fix pullup/pulldowns on bit selects. (1274) [Rob Stoddard]
* Fix verilator_coverage --annotate-min. (1284) [Tymoteusz Blazejczyk]
* Fix quoting of quoted arguments. [John Coiner]

==========================

**Announcement:**

* Moving forward, use the git "stable" branch to track the latest release,
and git "v." tags for specific releases.

**Minor:**

* Support 'assume' similar to 'assert'. (1269) [Dan Gisselquist]
* Remove c++filt. (1265) [Stefan Wallentowitz]
* Fix tracing example file output. (1268) [Enzo Chi]
* Fix gate optimization out of memory, add --gate-stmts. (1260) [Alex Solomatnikov]
* Fix compile error on public real parameters by suppressing. (1261) [Alex Solomatnikov]
* Fix input-only tristate comparisons. (1267) [Alexis G]
* Fix missing edge type in xml output. (1955) [Alexis G]
* Fix compile error with --public and interface bind. (1264) [Alexis G]