Bonus Crossword: Win a Copy of A Petition to Magic

For this week, I thought it would be a good idea to run a competition. Seeing as it's Worker's Day tomorrow, and my readers are going to have some time to work on it, I've decided to publish a bonus crossword puzzle for everyone to have a look at.

As always, the answers will be published next week, and you can supply your guesses to me via Twitter or Facebook. But there's a twist, this time. The first person to send me the correct answers before next week Tuesday will win a free copy of my fantasy short story ebook, A Petition to Magic! This will be by way of a coupon code that I will send to you, to be redeemed on Smashwords. In addition, I will publish your name as winner on this blog.

So what are you waiting for? Get solving!

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Across
1 Went beyond the limit (12)
5 Gave permission to do something (8)
9 The left or right (4)
11 Support one's weight on one's buttocks (3)
12 Binary inverse operator (3)
13 Point that must be replayed, in certain racquet sports (3)
15 An openly gay person is said to be this (3)
16 An actually existing thing (4)
17 1978 album by Led Zeppelin (8)
20 Component parts (12)

Down
2 Releasing from a leash (10)
3 Unit of scoring in cricket (3)
4 An article (3)
6 Alcoholic beverage produced by SAB (6)
7 Discerned visually (4)
8 An enthusiastic emotion (10)
10 2012 film starring Nicolas Cage (6)
14 Of a fact (4)
18 To decompose (3)
19 Supported one's weight on one's buttocks (3)