Move incomplete colorschemes and improve cd

The default colorschemes should ideally use 256 colors instead
of just 16 colors. The `simple` colorscheme should cover most
16 color use cases. I went through the colorschemes and put the themes
that didn't look good or looked incomplete in an in_progress directory.

This commit also improves the `cd` command behavior when using an
unnamed buffer.

runtime/colorschemes/flamepoint-tc.micro

@@ -1,30 +0,0 @@
-#Flamepoint theme
-#By CaptainMcClellan
-color-link default ""
-color-link comment ""
-color-link constant ""
-color-link constant.bool ""
-color-link constant.bool.true ""
-color-link constant.bool.false ""
-color-link constant.number ""
-color-link constant.specialChar ""
-color-link constant.string ""
-color-link constant.string.url "underline"
-color-link identifier ""
-color-link identifier.var ""
-color-link preproc ""
-color-link special ""
-color-link statement ""
-color-link symbol ""
-color-link symbol.brackets ""
-color-link symbol.tag ""
-color-link type ""
-color-link type.keyword ""
-color-link error ""
-color-link todo ""
-color-link cursor-line "" 
-color-link statusline ""
-color-link tabbar ""
-color-link color-column ""
-color-link gutter-error ""
-color-link gutter-warning ""

runtime/colorschemes/funky-cactus-tc.micro

@@ -1 +0,0 @@
-#Funky Cactus theme in true colour.

runtime/colorschemes/nes-tc.micro

@@ -1,30 +0,0 @@
-#NES
-#A color theme only using NES pallette colours
-color-link default ""
-color-link comment ""
-color-link constant ""
-color-link constant.bool ""
-color-link constant.bool.true ""
-color-link constant.bool.false ""
-color-link constant.number ""
-color-link constant.specialChar ""
-color-link constant.string ""
-color-link constant.string.url "underline"
-color-link identifier ""
-color-link identifier.var ""
-color-link preproc ""
-color-link special ""
-color-link statement ""
-color-link symbol ""
-color-link symbol.brackets ""
-color-link symbol.tag ""
-color-link type ""
-color-link type.keyword ""
-color-link error ""
-color-link todo ""
-color-link cursor-line "" 
-color-link statusline ""
-color-link tabbar ""
-color-link color-column ""
-color-link gutter-error ""
-color-link gutter-warning ""

runtime/syntax/go.yaml

@@ -11,11 +11,9 @@ rules:
     - symbol.operator: "[-+/*=<>!~%&|^]|:="
 
       # Types
-    - special: "[a-zA-Z0-9]*\\("
     - symbol: "(,|\\.)"
     - type: "\\b(u?int(8|16|32|64)?|float(32|64)|complex(64|128))\\b"
     - type: "\\b(uintptr|byte|rune|string|interface|bool|map|chan|error)\\b"
-      ##I'm... not sure, but aren't structs a type?
     - type.keyword: "\\b(struct)\\b"
     - constant.bool: "\\b(true|false|nil)\\b"