Fix #25.
Fix #24.
Merge pull request #22 from GreenLightning/master

Dirty Flag Chapter: Fix a typo in one of the asides

Great catch! Thank you!
Fix #21.
Fix #20.
Fix #19.
Fix #17.
Fix #23.
Dirty Flag - Typo

Just a small typo: "in other worlds" -> "in other words"
First draft intro for sequencing patterns.
Notes and test program for flyweight.
Revise sequencing patterns intro.
Fix typo in Singleton.
Start first draft of flyweight.
Little more work on Flyweight.
More work on Flyweight.
Fix two errors in single sentence.

- 'goes' used as transitive verb assumed to have been 'goes through' (could have also been 'calls').

- typo 'assurred' -> 'assured'
Create real code for Flyweight.
Finish first draft of Flyweight.
Write 298 words for See Also in Flyweight.