Ignore contact fields that are set to none (#16)

* Add optional contact info

Ignore contact fields that are set to none. 
Email is taken as the "priority" field which is most likely set and therefore doesn't have a separator field included. This could be either set to a different field or be replaced by a better function.

* Fix Expression error

---------

Co-authored-by: Paul T <developer.paul.123@gmail.com>

lib.typ

@@ -281,14 +281,21 @@
       )
       #block[
         #align(horizon)[
+          #if author.phone != none [
             #phone-icon
             #box[#text(author.phone)]
             #separator
+          ]
+          #if author.email != none [
             #email-icon
             #box[#link("mailto:" + author.email)[#author.email]]
+          ]
+          #if author.github != none [
             #separator
             #github-icon
             #box[#link("https://github.com/" + author.github)[#author.github]]
+          ]
+          #if author.linkedin != none [
             #separator
             #linkedin-icon
             #box[
@@ -297,6 +304,7 @@
           ]
         ]
       ]
+    ]
   }
   
   name
@@ -531,18 +539,26 @@
           #stack(
             dir: ltr,
             spacing: 0.5em,
-            phone-icon,
-            box[#text(author.phone)],
-            separator,
-            email-icon,
-            box[#link("mailto:" + author.email)[#author.email]],
-            separator,
-            github-icon,
-            box[#link("https://github.com/" + author.github)[#author.github]],
-            separator,
-            linkedin-icon,
-            box[
+            if author.phone != none [
+              #phone-icon
+              #box[#text(author.phone)]
+              #separator
+            ],
+            if author.email != none [
+              #email-icon
+              #box[#link("mailto:" + author.email)[#author.email]]
+            ],
+            if author.github != none [
+              #separator
+              #github-icon
+              #box[#link("https://github.com/" + author.github)[#author.github]]
+            ],
+            if author.linkedin != none [
+              #separator
+              #linkedin-icon
+              #box[
                 #link("https://www.linkedin.com/in/" + author.linkedin)[#author.firstname #author.lastname]
+              ]
             ],
           )
         ]

template/resume.typ

@@ -16,7 +16,7 @@
     ),
   ),
   date: datetime.today().display(),
-  colored-headers: true
+  colored-headers: true,
 )
 
 = Experience