Merge branch 'v2-prototype' into feature/website/jobs-page-part2

* v2-prototype: (38 commits)
  Revert "Publish"
  Publish
  Remove ERC721 callback functions
  Use != instead of > in loops, add sanity checks to market fill functions
  Add more tests and fixes
  Remove MConstants and MixinConstants for LibConstants
  Remove redundant external call by reimplementing fillOrderNoThrow
  Remove orders length check
  Add assertValidFillResults
  Update web3Wrapper CHANGELOG
  Get actual gasPrice from transaction instead of setting default
  Store orders length in varible before looping over orders
  Use transferFrom instead of safeTransferFrom
  Fix minimal tests
  Fix rounding error issues, use different logic when makerAsset is ZRX
  Rename marketSellEth => marketSellWeth
  Update percentage constants
  Update transferEthFeeAndRefund, add check to ERC721 transfer
  Refactor forwarding contract architecture, remove batch functions
  Updated CHANGELOGS
  ...

1 files changed, 5 insertions, 7 deletions

diff --git a/PULL_REQUEST_TEMPLATE.md b/PULL_REQUEST_TEMPLATE.md
index 257c91025..63ef8db3d 100644
--- a/PULL_REQUEST_TEMPLATE.md
+++ b/PULL_REQUEST_TEMPLATE.md
@@ -18,12 +18,10 @@
 
 ## Checklist:
 
-<!--- Go over all the following points, and put an `x` in all the boxes that apply. -->
+<!--- The following points should be used to indicate the progress of your PR.  Put an `x` in all the boxes that apply right now, and come back over time and check them off as you make progress.  If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
 
-<!--- If you're unsure about any of these, don't hesitate to ask. We're here to help! -->
-
-*   [ ] Change requires a change to the documentation.
-*   [ ] Added tests to cover my changes.
+*   [ ] Prefixed the title of this PR with `[WIP]` if it is a work in progress.
+*   [ ] Prefixed the title of this PR with bracketed package name(s) corresponding to the changed package(s). For example: `[sol-cov] Fixed bug`.
+*   [ ] Added tests to cover my changes, or decided that tests would be too impractical.
+*   [ ] Updated documentation, or decided that no doc change is needed.
 *   [ ] Added new entries to the relevant CHANGELOG.jsons.
-*   [ ] Labeled this PR with the 'WIP' label if it is a work in progress.
-*   [ ] Labeled this PR with the labels corresponding to the changed package.