Modified the request canonicalization

Breaking change: only when the Content-Type is set to application/x-www-form-urlencoded, the Plus Sign is replaced with Spaces (https://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.1)

2.0.0: Merge pull request #16 from sigee/master

Cleanup and unhandled exception fix

sign date calculated at signature

1.2.0

fix(date-in-constructor) move date from constructor param to param of…

Fixing authentication when unindexed arrays in query strings

0.2.13

fix authentication with unindexed arrays in query strings

Fixing a PHP notice, and a test about lowercasing SignedHeaders in Authroziation header

• Fixing a PHP notice related to HTTPs check
• Adding a new test if SignedHeaders names are lowercased

Reduce clockSkew

Reduce clockSkew from 900 to 300

Standardize error messages

0.2.8

Rewrite error messages

Standartize error messages and add tests

0.2.7

Standartize error messages and add tests

Fix a PHP Notice

Merge pull request #2 from FallDi/master

Fix PHP Notice:  Undefined index: path...

Security fixes

• check signature and other values with strict equality operator (=== and !===)
• report the provided signature only on signature problem