v2.6.0

Fixes

• Fix filepath on Windows when MinGW is used. (#212)

Improvements

• Removed the creation of static Metadata objects during initialisation time.
• #define QUILL_QUEUE_CAPACITY has been removed.
• Added Config option default_queue_capacity that can be used to specify the initial capacity of the queue.
• When Unbounded queue is used the newly allocated queue will now have enough space to fit any
  object. (#215)