Various improvements to credits generation

- Include author and comitter (so includes rebased commits)
 - Ignore case when sorting names

Fixes #356

build.gradle

@@ -78,21 +78,23 @@
     inputs.property "mcversion", project.minecraft.version
 
     def grgit = Grgit.open(dir: '.')
-    inputs.property "commithash", grgit.log(maxCommits: 1)[0].id
+    inputs.property "commithash", grgit.head().id
 
     def blacklist = ['GitHub', 'dan200', 'Daniel Ratcliffe']
     Set<String> contributors = []
 
     grgit.log().each {
-        if (!blacklist.contains(it.committer.name))
-            contributors.add(it.committer.name)
+        if (!blacklist.contains(it.author.name)) contributors.add(it.author.name)
+        if (!blacklist.contains(it.committer.name)) contributors.add(it.committer.name)
     }
 
     from(sourceSets.main.resources.srcDirs) {
         include 'mcmod.info'
         include 'assets/computercraft/lua/rom/help/credits.txt'
 
-        expand 'version':project.version, 'mcversion':project.minecraft.version, 'gitcontributors':contributors.sort().join('\n')
+        expand 'version':project.version,
+               'mcversion':project.minecraft.version,
+               'gitcontributors':contributors.sort(false, String.CASE_INSENSITIVE_ORDER).join('\n')
     }
 
     from(sourceSets.main.resources.srcDirs) {