0.3.0 - support progress bar with different styles

• Support progress bar with different styles
• Add quotes for node titles so that titles containing special chars can be used

NOTES:

• Check out this issue for more details about how to use progress bar: #1
• doc is updated as well, https://github.com/niyue/skillmap/blob/main/docs/skillmap_descriptor.md

0.2.3 - default skillmap name and python 3.8

Add a default skill map name and specify python 3.8 as the min version to support.

orientation support

Add oritentation support and add more documentation

auto group disabling

Disable a group if all of its chiildren are all with "new" or unspecified status

theme support

Add themes support, 6 different themes are included

initial version

Initial version, support generating skill map from a toml descriptor.