Document unimatch. Also add uniprops to the words file

Author: samcv

doc/Type/Cool.pod6

@@ -928,6 +928,20 @@ codepoints in that character.
     say "Ḍ̇'oh".comb>>.uninames.perl;
     # (("LATIN CAPITAL LETTER D WITH DOT BELOW", "COMBINING DOT ABOVE").Seq, ("APOSTROPHE",).Seq, ("LATIN SMALL LETTER O",).Seq, ("LATIN SMALL LETTER H",).Seq)
 
+=head2 method unimatch
+
+Defined as:
+    sub unimatch(Str:D $str, |c)
+    unimatch(Int:D $code, Stringy:D $pvalname, Stringy:D $propname = $pvalname)
+
+Checks if the given integer codepoint or the first letter of the string given have a unicode property
+equal to the value you give. If you supply the Unicode property to be checked it will only return True
+if that property matches the given value.
+
+    say unimatch 'A', 'Latin' # True
+    say unimatch 'A', 'Latin', 'Script' # True
+    say unimatch 'A', 'Ll' #True
+
 =head2 routine chop
 
 Defined as:

xt/words.pws

@@ -1085,6 +1085,7 @@ unimportable
 uniname
 uninames
 uniprop
+uniprops
 unival
 univals
 unlesselse