Improve tokenization

[50Wliu]

Requirements

• Filling out the template is required. Any pull request that does not include enough information to be reviewed in a timely manner may be closed at the maintainers' discretion.
• All new code requires tests to ensure against regressions

Description of the Change

• Tokenize function names for function and method calls
• Tokenize objects and properties

Before	After

Quite the difference if I do say so myself. This brings language-python in line with other languages such as language-javascript, language-coffee-script, language-php, etc.

Alternate Designs

None.

Benefits

✨ highlighting ✨

Possible Drawbacks

None.

Applicable Issues

Fixes #170
Fixes #141