Extend list of supported filetypes

Added:
* Bison/Yacc: `*.ypp`
* Fossil: `*.fossil`
* Roff: `*.pikchr`, `chem.macros`, `{eth,lsd,morphine}.p`

References: Alhadis/language-grammars@2debfb3

Author: Alhadis

CHANGELOG.md

@@ -10,7 +10,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ----------------------
 ### Added
 - **New icons:** Art Text 4 (`.art4` directories), Bikeshed (`.bs`), dotenv (`.env{,.*}`), Figma (`.figma`), Imgbot (`.imgbotconfig`), Mint (`.mint`), PhotoRec (`.photorec.cfg`), ShellCheck (`.shellcheckrc`), Sponge-powered Mixin (`.mixin{,s}.json`), Windi CSS (`windi.config.{ts,js}`)
-- **Support:** Appcelerator Titanium (`.tss`), BC (`.bc`, `bc.library`), Checksum lists (`{.,}{check,ck,crc{,32},md5,rmd160,sha{1..3,224,384,512}}sum{,s}`), DC (`.dc`, `.dcrc`), Database (`.tgn`), EditorConfig (`.ecrc`), Generic (`.ed`), Git (`.lfsconfig`), Grammar (`.grammar`), Mail (`.eml`, `.mbox`, `.mbx`), Maps (`.mapping`, `.tiny`, `.tinyv2`, `.enigma`, `.match`, `.unpick`), PEG.js (`.peggy`), Roff (`*.cstr`, `cstr.54`, `indep_tr`), TextMate (`.tm_properties`, `.tmProperties`), Units (`units.dat`, `unittab`), XML (`.xmp`)
+- **Support:** Appcelerator Titanium (`.tss`), BC (`.bc`, `bc.library`), Checksum lists (`{.,}{check,ck,crc{,32},md5,rmd160,sha{1..3,224,384,512}}sum{,s}`), DC (`.dc`, `.dcrc`), Database (`.tgn`), EditorConfig (`.ecrc`), Generic (`.ed`), Git (`.lfsconfig`), Grammar (`.grammar`), Mail (`.eml`, `.mbox`, `.mbx`), Maps (`.mapping`, `.tiny`, `.tinyv2`, `.enigma`, `.match`, `.unpick`), PEG.js (`.peggy`), Roff (`*.cstr`, `cstr.54`, `indep_tr`), TextMate (`.tm_properties`, `.tmProperties`), Units (`units.dat`, `unittab`), XML (`.xmp`), Yacc (`.ypp`)
 - Improved modeline support for [Less](https://lesscss.org/) stylesheets
 
 ### Fixed

config.cson

@@ -981,7 +981,7 @@ fileIcons:
 			[".bison", "medium-red", "bison"]
 			[".y", "dark-green"]
 			[".yacc", "medium-green"]
-			[".yy", "medium-cyan"]
+			[/\.(yy|ypp)$/i, "medium-cyan"]
 		]
 
 	Bitbucket:
@@ -2537,6 +2537,12 @@ fileIcons:
 			[/\.fossaignore$/i, "dark-blue"]
 		]
 
+	Fossil:
+		icon: "fossil"
+		match: ".fossil"
+		colour: "auto-cyan"
+		uses: "SQLite"
+
 	Fountain:
 		icon: "fountain"
 		match: ".fountain"
@@ -3972,14 +3978,14 @@ fileIcons:
 					| ('+\t?|\.\t)\\"\s
 					) ///m]
 			[/^(man|mdoc)\.template$/i, "dark-green"]
-			[/\.(chem|dformat|pic)$|^grap(\.tex)?\.defines$/i, "dark-green"
-				alias: /^([gt]?pic|dformat|chem)$/i
+			[/\.(chem|dformat|pic|pikchr)$|^grap(\.tex)?\.defines$/i, "dark-green"
+				alias: /^([gtd]?pic|dformat|chem|pikchr)$/i
 				scope: "source.pic"
-				interpreter: /^((pic|grap)2(plot|graph)|[gt]?pic|picpack|picasso)$/
+				interpreter: /^((pic|grap)2(plot|graph)|[gtd]?pic|picpack|picasso|pikchr)$/
 				signature: /^\.(PS\s[^\0]*?^\.P[EF]|cstart\n[^\0]*?^\.cend|begin dformat\s[^\0]*?^\.end|G1\n[^\0]*?\n\.G2)\n/m]
 			[/\.(rnh|rno|run|runoff)$/i, "dark-maroon", "runoff"]
 			[/(^|\.)((troff|eqn)rc(-end)?)$/i, "dark-green"]
-			[/^tmac\.|^(cstr\.54|indep_tr|mmn|mmt|toc\.entries)$/i, "dark-green", priority: 2]
+			[/^tmac\.|^(cstr\.54|indep_tr|mmn|mmt|toc\.entries|chem\.macros|(eth|lsd|morphine)\.p)$/i, "dark-green", priority: 2]
 			[/(^|\/)samples\/(eqn|mm|[nt]?roff|pic|tbl)\.[a-z]+$/i, "dark-green", matchPath: true, priority: 0.5]
 			[///
 				(\\|/)