Add support for #930 - specify an abort handler exception
Document the abort_exception env_var
WIP w/ intermediate data nodes
Start of real impl, still missing parts
MOAR
Nuke prints
Unreleased shit
Reorg, ensure ancient changelog bits don't conflict badly
Hrm
Slowly getting there, something is generating too many entries now
Do not need attributes attr
Handle wrench in gears
Indentation: sometimes difficult
hrm
God damn it
Merge branch 'master' into better-changelog
Meh
Fix dupe add logic re: unreleased
WIP - next is remove bugs from feature release lists
Merge branch 'master' into better-changelog

Conflicts:
	docs/changelog.rst