tables can be sorted; optimized Agents load slightly
Document `events_to_show` and `ttl`.
DataOutputAgent: Allow the `pubDate` value for each item to be given by user.
update CHANGES.md
fix _response_ description
Merge pull request #491 from cantino/maintain_changes

update CHANGES.md
Merge branch 'master' into table_sorting
integrate knu's suggestions
update CHANGES.md
Merge pull request #488 from knu/data_output_agent-pubDate

DataOutputAgent: Allow the `pubDate` value for each item to be given by user.
calculate ids if none are available
Added ianblenke/docker-huginn as docker/ subdirectory, moved Dockerfile out of the root and renamed as Dockerfile.rbenv
Changing the maintainer email in the Dockerfile
Changing the Maintainer to just Andrew Cantino
Fix github project name in docker/README.md
Refactored the environment variables to use a HUGINN_ prefix
add event description, disable spring because it messes with foreman
Merge pull request #495 from cantino/fix_rss_agent_ids

Calculate IDs in RssAgent if none are available
Load huginn_scheduler first before each thread starts to auto-load files.

This should fix #501.
Call load_types_in after necessary class methods are defined.

Loaded subclasses need them.

This should fix #502.