Clean Pom
Rename packages
Initiate JUnit tests for querydispatcher-esper
Add parameterized Uri gramma
Add more commets
Initiate external function package
Add JUnit tests for querydispatcher-esper
Add JUnit tests + Bug fixed

Bug: wrong parathese matching in NOT event filter
Add BDPLArray package
Add Array Parser
Continue Array Parser
Move BDPL syntax checking in parser package
Continue Array Parser
Clean codes
Add context clause
Initiate sparql query repository
Change type of array element to String
Continue Array Parser

static array definition: explicit
Initiate BDPL query initiator
Continue sparql query repository