#92, not finished
Merge branch 'master' of github.com:ethereum/pyethereum

Conflicts:
	pyethereum/blocks.py
	tests/test_chain.py
assert valid packet length
Add note about privileges for pip

This adresses #93.

I guess, the README is still more directed towards
(python) developers than regular users...
rename trie._root to reduce confusing
update fixtures
fix: reconstruct a new blank account instead use the same old me
rename
add: handy wrap of recursive_int_to_big_endian and rlp.encode
add: state root test almost without dependecies
state root test with even less dependecies
trie: rename BLANK
trie: value limited to string
use pytest in tox/travis
Merge branch 'master' of github.com:ethereum/pyethereum
add: dev dependency for serpent
fix: now blocks respect BLANK_ROOT
fix: get value from trie is still encoded
fix: now tx_root_list respect BLANK_ROOT
add: trie.root_valid test