Update twitter.py

Replace newlines with space, looks nicer
tag.py: add .untag, so each tag action has its own command
near: show users near you. experimental.
flake8 + autopep8 (whitespace fixes)
Merge pull request #95 from factormystic/patch-1

Update twitter.py
near: add 'miles' option
Modified http util to support additional headers

Inverted some header logic

Removed user_agent and referer from http, in favor of headers dict

http: formatting

http: Fixed missing part in conditional
Merge pull request #97 from parkrrr/feature-http-headers

Feature http headers
bitcoin: use BTC-e instead of MtGox
tag: warn users when they try to use the old methods
yahooanswers: flip answer / link order