v0.1.2

Features

• Add m_button() function to support adding custom features in the viewer,
  such as switching the style of the model, etc (#29).
• Add m_png() to support convert widget to png (#27).
• Add m_grid() to support multiple viewers (#25).
• Quickly look at structures with m_glimpse(). Initializes the viewer with
  a range of useful defaults. Allows for quickly visually inspecting the structure
  and further customization of the viewer to speed up setup.
• Add multiple lines and cylinders in one function call are supported (#17). Refer to this article for
  more information.
• Add speed option for m_spin() and option for keepH in m_add_model() (#13).

Others

• Add logo for {r3dmol} (#16).
• Function m_set_view_style() is deprecated and replaced by m_add_outline().
• Upgrade 3Dmol.js to the latest version (v1.6.2) (#12).