Major.Minor.Fixes

• Major versions are breaking updates, that will require user facing code to change.
• Minor versions are feature updates, which may require internal code to change.
• Fixes are bugfixes.

0.15.0

• NylonText Nodes now have a NylonTextStyle property.
• You can use this to define custom properties for use by the Reader.
• The default styles are Novel, Bubble, and Title.
• For RPG style, speech bubble style, and InterTitles.
• How those work depends on how you build your reader.
• NylonChoice messages now have a chosen_before flag.
• You can now add and remove characters at runtime.
• Did not add a function to change messages before they are emitted.
• You can already override NylonBaseNode.send_message()