fix for proxy user with dots or hyphens
fix for os.env proxy without port
added some tests for connections behind proxies
Added launch_config's parameter associate_ip_address for VPC
Support for instance tenancy in create_vpc
Add DHCP options filtering
Unit tests for create_vpc and get_all_dhcp_options
Convert existing VPC tests to AWSMockServiceTestCase, typos
Fix order of docstring args in get_all_dhcp_options
Unit test for AssociatePublicIpAddress parameter
Allow elbadmin add/rm commands to use a list of instances instead of only one
Merge pull request #1799 from anarcher/develop

Added launch_config's parameter associate_ip_address for VPC. Fixes #1799.
Merge pull request #1806 from bdubertret/elbadmin_multinst

Update elbadmin add/remove commands to support multiple instance arguments. Fixes #1806.
Added documentation for valid event types

Reference: http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_DescribeAutoScalingNotificationTypes.html
Added documentation for valid event types

Reference:
http://docs.aws.amazon.com/AutoScaling/latest/APIReference/API_DescribeAutoScalingNotificationTypes.html
Added documentation for missing parameter 'tags'
Merge pull request #1807 from j0nes2k/develop

Added documentation for valid auto scaling event types and tags. Fixes #1807.
Merge pull request #1801 from mbarrien/vpc

Support VPC tenancy restrictions and filters for DHCP options. Fixes #1801.
Clarify documentation for MetricAlarm dimensions. Fixes #1803.
Merge pull request #1808 from danielgtaylor/cloudwatch-doc

Clarify documentation for MetricAlarm dimensions. Fixes #1808, #1803.