Renumber everything

Changing numbering systems is confusing and breaks markdown. For
sanity's sake, heirarchical numbers is fine.
Replace all dashes
We no longer allow 3 month arrears
Specify the Executive as 5 members
Consecutive terms are limited to 2 years
Clarify how expenditure happens
Record end of membership only if available
Removes grandfathering pre-incorporation membership clause
Clarifies beginning of membership
Allows discounting by the executive, as voted by members
Removal of membership, tightens periods of appeal
Executive Positions Clarified, Eligibility Criteria
Prevent leading ballots
Rules around removal from the management committee
Expectations of the management committee as a whole
Change the rules to reflect on how we actually run meetings
Secretary's role at a general meeting
Specify in-place whom the chief executive is
Remove rules around petty cash
Renumber everything appropriately