Elkme

Added
- --editconf command

Changed
- New configuration file format

Fixed
- Removed broken import

Added
- Set explicit length limit for outgoing SMS
Removed
- Outgoing call feature
- List numbers feature

Fixed
- Added requests as a requirement for elkme

Changed
- Internal format for the Elks class now takes a `requests` style auth tuple
for username and password instead of a dictionary
- Added deprecation warnings to the help page
- Changed from urllib to requests

Removed
- Printing HTTP errors, instead raises exceptions
- Removed the `--me` command

Added
- Broke out elks.format_sms_payload from elks.send_sms to support unit testing
- Broke out elks.format_call_payload from elks.make_call to support unit testing
- Support for SMS sending options in the SDK

Changed
- elks.my_numbers -> elks.list_numbers
- elks.my_user -> elks.list_user
- Fixed internal links to make elkme more appropriate as a SDK

Removed
- Support for legacy `textme` command
- elks.requires_elements
- Printing within the SDK
- TEMPORARY Debug messages within the SDK