pyDigitalWaveTools v1.2

* support for multiple aliases for same VCD id

pyDigitalWaveTools v1.1

* support for multiple scopes of a same name
* new CI, test cleanup

pyDigitalWaveTools v1.0

* UNDEF as undefined value for real/enum to match GTKWave

pyDigitalWaveTools v0.9

* fix parsing of vcd var. ids for string value update

pyDigitalWaveTools v0.8

* support for multiple root scopes

pyDigitalWaveTools v0.7

* support for non module $scope
* better tokenization of vector values, $ commands in dump area

pyDigitalWaveTools v0.6

* json writer (same functionality like vcd writer)
* value formatter API change

pyDigitalWaveTools v0.5

* test/build env update

v0.4

* packaging improvements
* doc codestyle
* pep8 var names

v0.3

* better exceptions on duplicit signal registration