Issue #22: Updated Schema Change Proposal (#1 & #4)

Because we are getting close to the call, I wanted to go ahead and get off a proposal for at least 2 of these. I am having some challenges with #2 and #3, so I will have to send those later.

1. <cap:identifier> and <cap:sender>: following states no spaces. 

<element name="identifier">
  <simpleType>
    <restriction base="string">
      <pattern value="([^\s]*)" />
    </restriction>
  </simpleType>
</element>

<element name="sender">
  <simpleType>
    <restriction base="string">
      <pattern value="([^\s]*)" />
    </restriction>
  </simpleType>
</element>

4. <cap:eventCode>, <cap:parameter>, <cap:geocode>: following states key=value format and both the key and value can not have spaces.

<element name="eventCode" minOccurs="0" maxOccurs="unbounded">
  <simpleType>
    <restriction base="string">
      <pattern value="([^\s]*)=([^\s]*)" />
    </restriction>
  </simpleType>
</element>

<element name="parameter" minOccurs="0" maxOccurs="unbounded">
  <simpleType>
    <restriction base="string">
      <pattern value="([^\s]*)=([^\s]*)" />
    </restriction>
  </simpleType>
</element>

<element name="geocode" minOccurs="0" maxOccurs="unbounded">
  <simpleType>
    <restriction base="string">
      <pattern value="([^\s]*)=([^\s]*)" />
    </restriction>
  </simpleType>
</element>