Fix some typos

```
codespell **/*.rb *.md -L fils,arry,isnt,zar,befor -w
```

Author: tagliala

CHANGELOG.md

@@ -213,7 +213,7 @@
    return `nil` as `Comparable#==` will not rescue exceptions in the next release.
  - Fix `Currency` specs for `#exponent` and `#decimal_places` not making assertions.
  - Fix a couple of Ruby warnings found in specs.
- - Fix `Money#-`,`Money#+` arithmetics for Ruby 2.3+ : check for zero value without using eql? with a Fixnum. (#577)
+ - Fix `Money#-`,`Money#+` arithmetic for Ruby 2.3+ : check for zero value without using eql? with a Fixnum. (#577)
  - Use `Money#decimal_mark` when formatting with `rounded_infinite_precision` rule
    set to `true`.
  - Replaced meta-defined `thousands_separator` and `decimal_mark` methods with regular methods. (#579)
@@ -260,7 +260,7 @@
  - Fix formatting of NGN - show symbol before amount
  - Switch default and alternate symbols for RUB currency
  - Fix symbol for TRY currency
- - Add `Money.default_formatting_rules` hash, meant to define default rules for everytime `Money#format` is called. They can be overwritten if provided on method call
+ - Add `Money.default_formatting_rules` hash, meant to define default rules for every time `Money#format` is called. They can be overwritten if provided on method call
  - Add support for the new official symbol for Russian Ruble (RUB) — «₽»
 
 ## 6.2.1
@@ -599,7 +599,7 @@ Features
  - Added `Money::Bank::Base#exchange_with`.
  - Deprecated `Money::Bank::Base#exchange`. Deprecation target set to Money
    3.2.0.
- - Implented `Money::Bank::VariableExchange`
+ - Implemented `Money::Bank::VariableExchange`
  - Deprecated `Money::VariableExchangeBank`. Deprecation target set to Money
    3.2.0.
  - Deprecate `Money::SYMBOLS`, `Money::SEPARATORS` and `Money::DELIMITERS`.
@@ -679,7 +679,7 @@ Features
  - Added `Money::Bank::Base#exchange_with`.
  - Deprecated `Money::Bank::Base#exchange`. Deprecation target set to Money
    3.2.0.
- - Implented `Money::Bank::VariableExchange`
+ - Implemented `Money::Bank::VariableExchange`
  - Deprecated `Money::VariableExchangeBank`. Deprecation target set to Money
    3.2.0.
  - Deprecate `Money::SYMBOLS`, `Money::SEPARATORS` and `Money::DELIMITERS`.

README.md

@@ -506,7 +506,7 @@ In order to localize formatting you can use `I18n` gem:
 Money.locale_backend = :i18n
 ```
 
-With this enabled a thousands seperator and a decimal mark will get looked up in your `I18n` translation files. In a Rails application this may look like:
+With this enabled a thousands separator and a decimal mark will get looked up in your `I18n` translation files. In a Rails application this may look like:
 
 ```yml
 # config/locale/en.yml

lib/money/money.rb

@@ -339,7 +339,7 @@ class << self
   #   Money.new(100, "EUR") #=> #<Money @fractional=100 @currency="EUR">
   #
   def initialize( obj, currency = Money.default_currency, options = {})
-    # For backwards compatability, if options is not a Hash, treat it as a bank parameter
+    # For backwards compatibility, if options is not a Hash, treat it as a bank parameter
     unless options.is_a?(Hash)
       options = { bank: options }
     end

spec/currency_spec.rb

@@ -281,7 +281,7 @@ def to_s
       expect(currency).to eq currency
     end
 
-    it "returns true if the id is equal ignorning case" do
+    it "returns true if the id is equal ignoring case" do
       expect(described_class.new(:eur)).to     eq described_class.new(:eur)
       expect(described_class.new(:eur)).to     eq described_class.new(:EUR)
       expect(described_class.new(:eur)).not_to eq described_class.new(:usd)

spec/money/arithmetic_spec.rb

@@ -222,7 +222,7 @@
       expect(Money.new(10_00, "USD") + other).to eq Money.new(19_00, "USD")
     end
 
-    it "adds Integer 0 to money and returns the same ammount" do
+    it "adds Integer 0 to money and returns the same amount" do
       expect(Money.new(10_00) + 0).to eq Money.new(10_00)
     end
 
@@ -253,7 +253,7 @@
       expect(Money.new(10_00, "USD") - other).to eq Money.new(1_00, "USD")
     end
 
-    it "subtract Integer 0 to money and returns the same ammount" do
+    it "subtract Integer 0 to money and returns the same amount" do
       expect(Money.new(10_00) - 0).to eq Money.new(10_00)
     end