Provide support to set title for state

[CumpsD]

Config options:

• Default
• Suffix
• Prefix
• Separator

[CumpsD]

Translatable

[CumpsD]

Proposed API:

• setTitle (sets the title and forgets everything it knew about previous titles)
• appendTitle (appends a part to the title)
• clearTitle (clears the title)
• removeLastTitle (clears the last part of the title)

Supports the following scenarios:

• Setting a title for a new page, perhaps the most commonly used
• Append a part to the title, for example if you are operating in substates and want to append something
• Clear Title would be the onExit move after setting it (falls back to default)
• Remove Last Title is the onExit for substates

Internally, we keep an array with the title parts

• Setting clears the array and puts 1 value in
• Appending pushes something on it
• Clear title empties the array
• Remove last title pops last thing

[sroosen]

Works for me.