Don't wait for return value in webppl_eval, instead use cont
Normalize probabilities in discrete erp
Merge branch 'master' of https://github.com/probmods/webppl

Conflicts:
	compiled/webppl.js
	src/header.js
Add gamma erp
Add exponential erp
Add beta erp
Add binomial erp
Add poisson erp
Add dirichlet erp
Add shorthand for new erps
Fix undefined var
Add erpFactor
Empty stack in MH loop
Updated compiled version
Make withEmptyStack accessible from within webppl
issue with MH when there is no return value
Merge pull request #14 from bessiambre/master

issue with MH when there is no return value
Updated compiled version
Use the particles from all iterations of conditional SMC.
Merge pull request #16 from null-a/pmcmc

PMCMC improvement