fix issue #1254 Allow the same context to be used multiple times in configuration
rm code that is no long used
Add this fix to HISTORY.md file

Conflicts:
	HISTORY.md
pass file path to ycb
update ycb package version
Handle invalid context exceptions with output handler
Added unit test for contextValidate error handling
Fixed test
Create a new dispatcher for every test in setUp.
update HISTORY.md for pr #1286
fix issue #1280 Composite.execute cannot be called multiple times in the same mojit
update where the new queue is created and check data meta for each call
add more unit tests
update unit tests and add entry to HISTORY

Conflicts:
	HISTORY.md
add unit test to check running composite.execute parallelly
Merge pull request #1309 from lzhan/next

Merge pull requests to next branch