Trie improvement
+ fixed for db save/load (rlp bug)
+ garbage collector for obsolete trie nodes
Trie
 +fixing the bug of loading Trie from the db
 +Tracing full tree improved - now it traverse the trie recursively from the root
Trie - going on
 +turning off the garbage collector for a while , it should be better tested
 + dump of the full trie to the files each block
Trie:
+ Sample for the blog post
no real change just to kick off another travis build
 Fixing tests for Trie : RLP changes
trying to increase memory for travis
Tri: testing fix
+ 100000 update/deletes was to hard for travis free server reducinng the testing for 5000 operations
Move utility method to ByteUtil
Fix log levels
Calculate gasCost to spend at end of switch
Make logger final
Add ability for short hexString of DataWord
Close on conflict
Sort logged memory locations
Improve some logging
Merge conflict
Add more pretty vmtrace logging
Improve pretty trace
Disable time-consuming tests by default