Remove more unicode alts

Resolves   #700.

DOCS.md

@@ -930,7 +930,6 @@ Coconut supports Unicode alternatives to many different operator symbols. The Un
 ∘**> (\u2218**>)            => "..**>"
 <**∘ (<**\u2218)            => "<**.."
 ⁻ (\u207b)                  => "-" (only negation)
-¬ (\xac)                    => "~"
 ≠ (\u2260) or ¬= (\xac=)    => "!="
 ≤ (\u2264) or ⊆ (\u2286)    => "<="
 ≥ (\u2265) or ⊇ (\u2287)    => ">="

coconut/compiler/grammar.py

@@ -669,7 +669,7 @@ class Grammar(object):
     dollar = Literal("$")
     lshift = Literal("<<") | fixto(Literal("\xab"), "<<")
     rshift = Literal(">>") | fixto(Literal("\xbb"), ">>")
-    tilde = Literal("~") | fixto(~Literal("\xac=") + Literal("\xac"), "~")
+    tilde = Literal("~")
     underscore = Literal("_")
     pound = Literal("#")
     unsafe_backtick = Literal("`")

coconut/constants.py

@@ -679,7 +679,7 @@ def get_bool_env_var(env_var, default=False):
     "\u2191",  # **
     "\xf7",  # /
     "\u207b",  # -
-    "\xac=?",  # ~ !
+    "\xac=",  # !=
     "\u2260",  # !=
     "\u2264",  # <=
     "\u2265",  # >=

coconut/root.py

@@ -26,7 +26,7 @@
 VERSION = "2.1.1"
 VERSION_NAME = "The Spanish Inquisition"
 # False for release, int >= 1 for develop
-DEVELOP = 21
+DEVELOP = 22
 ALPHA = False  # for pre releases rather than post releases
 
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