GH-15: flag words as rare instead of bad in NeoVim

This change marks all words in all dictionaries as rare words so that
NeoVim highlights them as SpellRare instead of SpellBad.  This lets you
distinguish between wordy writing and normal misspellings, respectively.

In order for this to work, your NeoVim needs to be patched as follows:

  https://github.com/neovim/neovim/pull/2456

  https://groups.google.com/forum/#!topic/vim_dev/rPWOoR3ZgSA

See `:help spell-wordlist-format` for details about dictionary markings.

data-neovim/en/said-synonyms.dic

@@ -0,0 +1,546 @@
+# synonyms for said - where neutrality is needed
+# Neutral: said, stated, described, wrote, and according to
+# http://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Words_to_watch
+/encoding=utf-8
+admit/?
+admits/?
+admitted/?
+admitting/?
+agree/?
+agreed/?
+agreeing/?
+agrees/?
+allege/?
+alleged/?
+alleging/?
+answer/?
+answered/?
+answering/?
+answers/?
+argue/?
+argued/?
+argues/?
+arguing/?
+articulate/?
+articulated/?
+articulates/?
+articulating/?
+ask/?
+asked/?
+asking/?
+asks/?
+assert/?
+asserted/?
+asserting/?
+asserts/?
+babble/?
+babbled/?
+babbles/?
+babbling/?
+bark/?
+barked/?
+barking/?
+barks/?
+bawl/?
+bawled/?
+bawling/?
+bawls/?
+beam/?
+beamed/?
+beaming/?
+beams/?
+beg/?
+began/?
+begged/?
+begging/?
+begs/?
+bellow/?
+bellowed/?
+bellowing/?
+bellows/?
+berate/?
+berated/?
+berates/?
+berating/?
+blabber/?
+blabbered/?
+blabbering/?
+blabbers/?
+brag/?
+bragged/?
+bragging/?
+brags/?
+breath/?
+breathed/?
+breathing/?
+breaths/?
+bribe/?
+bribed/?
+bribes/?
+bribing/?
+burp/?
+burped/?
+burping/?
+burps/?
+call/?
+called/?
+calling/?
+calls/?
+caution/?
+cautioned/?
+cautioning/?
+cautions/?
+chortle/?
+chortled/?
+chortles/?
+chortling/?
+chuckle/?
+chuckled/?
+chuckles/?
+chuckling/?
+claim/?
+claimed/?
+claiming/?
+claims/?
+clarified/?
+clarifies/?
+clarify/?
+clarifying/?
+comment/?
+commented/?
+commenting/?
+comments/?
+complain/?
+complained/?
+complaining/?
+complains/?
+confess/?
+confessed/?
+confesses/?
+confessing/?
+convey/?
+conveyed/?
+conveying/?
+conveys/?
+cough/?
+coughed/?
+coughing/?
+coughs/?
+counter/?
+countered/?
+countering/?
+counters/?
+cried/?
+cries/?
+croak/?
+croaked/?
+croaking/?
+croaks/?
+cry/?
+crying/?
+demand/?
+demanded/?
+demanding/?
+demands/?
+denied/?
+denies/?
+denounce/?
+denounced/?
+denounces/?
+denouncing/?
+deny/?
+denying/?
+disagree/?
+disagreed/?
+disagreeing/?
+disagrees/?
+drone/?
+droned/?
+drones/?
+droning/?
+elaborate/?
+elaborated/?
+elaborates/?
+elaborating/?
+enjoin/?
+enjoined/?
+enjoining/?
+enjoins/?
+enunciate/?
+enunciated/?
+enunciates/?
+enunciating/?
+exclaim/?
+exclaimed/?
+exclaiming/?
+exclaims/?
+explain/?
+explained/?
+explaining/?
+explains/?
+expose/?
+exposed/?
+exposes/?
+exposing/?
+express/?
+expressed/?
+expresses/?
+expressing/?
+find/?
+finding/?
+finds/?
+found/?
+fuss/?
+fussed/?
+fusses/?
+fussing/?
+gasp/?
+gasped/?
+gasping/?
+gasps/?
+grate/?
+grated/?
+grates/?
+grating/?
+greet/?
+greeted/?
+greeting/?
+greets/?
+growl/?
+growled/?
+growling/?
+growls/?
+grumble/?
+grumbled/?
+grumbles/?
+grumbling/?
+guffaw/?
+guffawed/?
+guffawing/?
+guffaws/?
+hiss/?
+hissed/?
+hisses/?
+hissing/?
+holler/?
+hollered/?
+hollering/?
+hollers/?
+howl/?
+howled/?
+howling/?
+howls/?
+huff/?
+huffed/?
+huffing/?
+huffs/?
+implore/?
+implored/?
+implores/?
+imploring/?
+inquire/?
+inquired/?
+inquires/?
+inquiring/?
+insist/?
+insisted/?
+insisting/?
+insists/?
+interrogate/?
+interrogated/?
+interrogates/?
+interrogating/?
+laugh/?
+laughed/?
+laughing/?
+laughs/?
+lie/?
+lied/?
+lies/?
+lying/?
+mimic/?
+mimicked/?
+mimicking/?
+mimics/?
+mock/?
+mocked/?
+mocking/?
+mocks/?
+mumble/?
+mumbled/?
+mumbles/?
+mumbling/?
+murmur/?
+murmured/?
+murmuring/?
+murmurs/?
+mutter/?
+muttered/?
+muttering/?
+mutters/?
+note/?
+noted/?
+notes/?
+noting/?
+observe/?
+observed/?
+observes/?
+observing/?
+offer/?
+offered/?
+offering/?
+offers/?
+order/?
+ordered/?
+ordering/?
+orders/?
+pant/?
+panted/?
+panting/?
+pants/?
+point out/?
+pointed out/?
+pointing out/?
+points out/?
+pose/?
+posed/?
+poses/?
+posing/?
+pout/?
+pouted/?
+pouting/?
+pouts/?
+pray/?
+prayed/?
+praying/?
+prays/?
+preach/?
+preached/?
+preaches/?
+preaching/?
+press/?
+pressed/?
+presses/?
+pressing/?
+pried/?
+pries/?
+prod/?
+prodded/?
+prodding/?
+prods/?
+pronounce/?
+pronounced/?
+pronounces/?
+pronouncing/?
+propose/?
+proposed/?
+proposes/?
+proposing/?
+pry/?
+prying/?
+purr/?
+purred/?
+purring/?
+purrs/?
+queried/?
+queries/?
+query/?
+querying/?
+question/?
+questioned/?
+questioning/?
+questions/?
+quip/?
+quipped/?
+quipping/?
+quips/?
+rag/?
+raged/?
+raging/?
+rags/?
+rant/?
+ranted/?
+ranting/?
+rants/?
+rave/?
+raved/?
+raves/?
+raving/?
+read/?
+reading/?
+reads/?
+recite/?
+recited/?
+recites/?
+reciting/?
+record/?
+recorded/?
+recording/?
+records/?
+register/?
+registered/?
+registering/?
+registers/?
+replied/?
+replies/?
+reply/?
+replying/?
+request/?
+requested/?
+requesting/?
+requests/?
+respond/?
+responded/?
+responding/?
+responds/?
+retort/?
+retorted/?
+retorting/?
+retorts/?
+reveal/?
+revealed/?
+revealing/?
+reveals/?
+roar/?
+roared/?
+roaring/?
+roars/?
+said/?
+sang/?
+say/?
+saying/?
+says/?
+scoff/?
+scoffed/?
+scoffing/?
+scoffs/?
+scold/?
+scolded/?
+scolding/?
+scolds/?
+scream/?
+screamed/?
+screaming/?
+screams/?
+screech/?
+screeched/?
+screeches/?
+screeching/?
+shout/?
+shouted/?
+shouting/?
+shouts/?
+show/?
+showed/?
+showing/?
+shows/?
+shriek/?
+shrieked/?
+shrieking/?
+shrieks/?
+sigh/?
+sighed/?
+sighing/?
+sighs/?
+snap/?
+snapped/?
+snapping/?
+snaps/?
+snarl/?
+snarled/?
+snarling/?
+snarls/?
+sneer/?
+sneered/?
+sneering/?
+sneers/?
+snort/?
+snorted/?
+snorting/?
+snorts/?
+sob/?
+sobbed/?
+sobbing/?
+sobs/?
+sounded out/?
+speculate/?
+speculated/?
+speculates/?
+speculating/?
+sputter/?
+sputtered/?
+sputtering/?
+sputters/?
+squawk/?
+squawked/?
+squawking/?
+squawks/?
+squeak/?
+squeaked/?
+squeaking/?
+squeaks/?
+stat/?
+stated/?
+stating/?
+stats/?
+suggest/?
+suggested/?
+suggesting/?
+suggests/?
+summed up/?
+surmise/?
+surmised/?
+surmises/?
+surmising/?
+tell/?
+telling/?
+tells/?
+titter/?
+tittered/?
+tittering/?
+titters/?
+told/?
+utter/?
+uttered/?
+uttering/?
+utters/?
+verbalise/?
+verbalised/?
+verbalises/?
+verbalising/?
+verbalize/?
+verbalized/?
+verbalizes/?
+verbalizing/?
+wail/?
+wailed/?
+wailing/?
+wails/?
+whimper/?
+whimpered/?
+whimpering/?
+whimpers/?
+whine/?
+whined/?
+whines/?
+whining/?
+whisper/?
+whispered/?
+whispering/?
+whispers/?
+yammer/?
+yammered/?
+yammering/?
+yammers/?
+yawn/?
+yawned/?
+yawning/?
+yawns/?
+yell/?
+yelled/?
+yelling/?
+yells/?
+yodel/?
+yodeled/?
+yodeling/?
+yodels/?