Update phpspec/prophecy from 1.9.0 to 1.10.0

[violinist-bot]

If you have a high test coverage index, and your tests for this pull request are passing, it should be both safe and recommended to merge this update.

Here is a list of changes between the version you use, and the version this pull request updates to:

• d638ebb Prepare for 1.10.0 release
• fd4736f Merge pull request #453 from drupol/update-travis-matrix
• c6a31f4 Merge pull request #446 from scroach/master
• 7654657 Merge pull request #442 from michalbundyra/hotfix/165-case-insensitive-methods
• efd1dfa Fix typo.
• 098f03f Support a narrower range of phpspec versions
• 00e17bc Allow a wider range of phpspec versions
• 65b55b2 Merge pull request #452 from drupol/451-update-minimal-version-of-sebastian-comparator
• 6315aad Merge pull request #420 from DonCallisto/memory_optimization
• 278880e Merge pull request #441 from elvetemedve/hotfix/spies-do-not-register-as-allowed-method-calls
• e865873 Update composer.json
• b1fba7f Issue #451: Update ClosureComparator to match the proper signature from upstream.
• e928247 Issue #451: Raise minimum version of sebastian/comparator.
• 7516ee6 Remove type declarations and use old array syntax to support PHP 5.3
• e9e0970 Fix nesting error when comparing objects Fix: Adjust usage of octokit #268
• c091b00 Keep method prophecies with lowecase method name key
• 343219c Hotfix: case insensitive methods
• 5a0903d Fix issue Update phpstan/phpstan from 0.12.9 to 0.12.10 #120 by delaying unexpected method call evaluation
• 28f7b6a Review fixes
• aba3a3a Introduced and fixed CachedDoubler behaviour in order to reduce memory usage

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