BuildGrid/buildgrid#36

Since 3.8.x (and PEP 565), pytest displays DeprecationWarning and
PendingDeprecationWarning. Problem is that it does not filter the
module the warnings come from and display warnings from third party
libraries. Ignore them for now, details:

https://docs.pytest.org/en/latest/warnings.html#deprecationwarning-and-pendingdeprecationwarning

BuildGrid/buildgrid#36

BuildGrid/buildgrid#36

amends some confusing wording re committer policy 

amends some confusing wording re committer policy 

adds link to RECC to README

changes link to point bug tracking to the issue board instead of issue list

updates link to fix a broken link and points to the issue board

Correctly finds file after download.

updates link to point to gitlab issue board view instead of list

updates the guide with more detail around the gitlab features and the way we've been using them

updates policy re feature proposals to 'strongly' suggest proposals prior to any work being done

#123

#117

#117

#117

#117

#117

#117

#117