v0.2

Implemented features:

• Implemented reinforcement drawing dimension UI.

UI improvements:

• Fixed stylesheet issue in beam and column reinforcement dialog.
• Updated helping image in beam reinforcement dialog box.
• Update workbench wiki image (include drawing icon).

Refactoring and bug fixes:

• Fix type annotation issue typing.Literal bug (made code compatible Python 3.7 version).
• Fixed bug in rebar distribution through spacing.
• Fixed custom spacing issue (load custom spacing when editing column/beam Reinforcement).
• Fixed rebar points calculations when left/rear/bottom face selected.