first commit of ch9
intro ch9
Copyediting of chapter 6, part 1
Changin Spring of 2013 to early 2013, since seasons like spring,winter mean different parts of the year in different hemispheres
Changing direction describing the merkle root. Its the transaction data that forms the 32 bytes of the merkle root.
Finish copyediting chapter 7
Finish copyediting of chapter 8
Merge branch 'minh_changes'
Adding and removing periods to standardize the punctuation in the BitcoinNodeTypes.png
Update Bloom filter examples 4 and 5 to hash the appropriate inputs X and Y
Removed reference to checklist as that doesn't come until chapter 8. Rewording of sentence per Issue #72
Fixing decimal calculation of target difficulty per Issue #93
Changing commutative to associative when discussing properties of addition per issue #95
Wee typo "is collection" -> "is a collection"
Merge pull request #96 from belovachap/develop

Wee typo "is collection" -> "is a collection"
alt-coins pt 1
multi-purpose mining alt-coins
anonymity alt-coins
alt-chains done, meta-coins started
chapter 9 end