(cf-convention#393) Remove trailing whitespace

Removed all found whitespaces, including unicode non-breaking spaces

CODE_OF_CONDUCT.md

@@ -1,7 +1,7 @@
 # Contributor Code of Conduct
 
 As contributors and maintainers of this project, we pledge to respect all people who
-contribute through reporting issues, posting feature requests, updating 
+contribute through reporting issues, posting feature requests, updating
 documentation, submitting pull requests or patches, and other activities.
 
 We are committed to making participation in this project a harassment-free experience for

README.md

@@ -28,6 +28,6 @@ Whenever a [pull request](https://github.com/cf-convention/cf-conventions/pulls)
 - http://cfconventions.org/cf-conventions/cf-conventions.html
 - http://cfconventions.org/cf-conventions/cf-conventions.pdf
 - http://cfconventions.org/cf-conventions/conformance.html
-- http://cfconventions.org/cf-conventions/conformance.pdf 
+- http://cfconventions.org/cf-conventions/conformance.pdf
 
-These documents are linked in the cf-conventions web site. [source here](https://github.com/cf-convention/cf-convention.github.io) which is published to: http://cfconventions.org/. The latest spec documents are linked from those web pages here: http://cfconventions.org/latest.html. 
+These documents are linked in the cf-conventions web site. [source here](https://github.com/cf-convention/cf-convention.github.io) which is published to: http://cfconventions.org/. The latest spec documents are linked from those web pages here: http://cfconventions.org/latest.html.

appa.adoc

@@ -32,7 +32,7 @@ Attribute
 | N
 | C, D
 | link:$$http://www.unidata.ucar.edu/software/netcdf/docs/attribute_conventions.html$$[NUG Appendix A, "Attribute Conventions"], and <<packed-data>>
-| If present for a variable, this number is to be added to the data after it is read by an application. 
+| If present for a variable, this number is to be added to the data after it is read by an application.
 If both **`scale_factor`** and **`add_offset`** attributes are present, the data are first scaled before the offset is added.
 In cases where there is a strong constraint on dataset size, it is allowed to pack the coordinate variables (using add_offset and/or scale_factor), but this is not recommended in general.
 
@@ -348,5 +348,5 @@ In cases where there is a strong constraint on dataset size, it is allowed to pa
 | Smallest and largest valid values of a variable.
 |===============
 
- 
+
 

appb.adoc

@@ -9,7 +9,7 @@ The XML suite of protocols provides a reasonable balance between human and machi
 It also provides extensive support for internationalization.
 See the W3C <<W3C>> home page for more information.
 
-The document begins with a header that identifies it as an XML file: 
+The document begins with a header that identifies it as an XML file:
 
 ----
 <?xml version="1.0"?>
@@ -18,12 +18,12 @@ The document begins with a header that identifies it as an XML file:
 Next is the **`standard_name_table`** itself, which is bracketed by the tags **`&lt;standard_name_table&gt;`** and **`&lt;/standard_name_table&gt;`**.
 
 ----
-<standard_name_table 
- xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
+<standard_name_table
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:noNamespaceSchemaLocation="CFStandardNameTable.xsd">
 ----
 
-The content (delimited by the `&lt;standard_name_table&gt;` tags) consists of, in order, 
+The content (delimited by the `&lt;standard_name_table&gt;` tags) consists of, in order,
 
 ----
   <institution>Name of institution here ... </institution>
@@ -35,7 +35,7 @@ The **`entry`** and **`alias`** elements take the following forms:
 
 ----
   <entry id="an_id">
-      Define the variable whose standard_name attribute has the value "an_id".  
+      Define the variable whose standard_name attribute has the value "an_id".
   </entry>
   <alias id="another_id">
       Provide alias for a variable whose standard_name attribute has the
@@ -47,7 +47,7 @@ The value of the **`id`** attribute appearing in the **`entry`** and **`alias`**
 _This is the value used for a variable's `standard_name` attribute._
 
 The purpose of the **`entry`** elements are to provide definitions for the **`id`** strings.
-Each **`entry`** element contains the following elements: 
+Each **`entry`** element contains the following elements:
 
 ----
   <entry id="an_id">
@@ -73,7 +73,7 @@ Rather they contain the value of the **`id`** attribute of an **`entry`** elemen
 The purpose of the **`alias`** elements are to provide a means for maintaining the table in a backwards compatible fashion.
 For example, if more than one **`id`** string was found to correspond to identical definitions, then the redundant definitions can be converted into aliases.
 It is not intended that the **`alias`** elements be used to accommodate the use of local naming conventions in the **`standard_name`** attribute strings.
-Each **`alias`** element contains a single element: 
+Each **`alias`** element contains a single element:
 
 ----
   <alias id="an_id">
@@ -95,17 +95,17 @@ Each **`alias`** element contains a single element:
       <grib>E134</grib>
       <amip>ps</amip>
       <description>
-          The surface called "surface" means the lower boundary of the atmosphere.  
+          The surface called "surface" means the lower boundary of the atmosphere.
       </description>
     </entry>
     <entry id="air_pressure_at_sea_level">
       <canonical_units>Pa</canonical_units>
       <grib>2 E151</grib>
       <amip>psl</amip>
       <description>
-          Air pressure at sea level is the quantity often abbreviated 
-          as MSLP or PMSL. sea_level means mean sea level, which is close 
-          to the geoid in sea areas.  
+          Air pressure at sea level is the quantity often abbreviated
+          as MSLP or PMSL. sea_level means mean sea level, which is close
+          to the geoid in sea areas.
       </description>
     </entry>
     <alias id="mean_sea_level_pressure">

appc.adoc

@@ -17,7 +17,7 @@ In the __Units__ column, __u__ indicates units dimensionally equivalent to those
 
 | `number_of_observations` | 1
 | The number of discrete observations or measurements from which a data value has been derived.
-The use of this modifier is deprecated and the standard_name number_of_observations is preferred to describe this type of metadata variable. 
+The use of this modifier is deprecated and the standard_name number_of_observations is preferred to describe this type of metadata variable.
 
 | `standard_error` | __u__
 | The uncertainty of the data value.