feature #121 Pimple C extension (jpauli)

This PR was merged into the 2.1.x-dev branch.

Discussion
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Pimple C extension

Pimple C extension

Commits
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f0fc45c Pimple C extension
Made the phpt tests report a failure exit code

Without the REPORT_EXIT_STATUS environment variable, running phpt tests on the extension will always report a success exit code, which does not make the build fail on failure
minor #129 Made the phpt tests report a failure exit code (stof)

This PR was merged into the 2.1.x-dev branch.

Discussion
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Made the phpt tests report a failure exit code

Without the REPORT_EXIT_STATUS environment variable, running phpt tests on the extension will always report a success exit code, which does not make the build fail on failure

Commits
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8fa404c Made the phpt tests report a failure exit code
updated the README to use composer for installation
added instructions about how to install the C extension
fixed README markup
Updated license year
minor #133 Updated license year (leettastic)

This PR was merged into the 2.1.x-dev branch.

Discussion
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Updated license year

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795f6a3 Updated license year
bumped version to 2.1.1
Reworded headline
minor #141 Reworded headline (WouterJ)

This PR was squashed before being merged into the 2.1.x-dev branch (closes #141).

Discussion
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Reworded headline

Imo, "Creation" happends when you first retrieve a service from the container, in this section it's about `Definition` instead

Commits
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fa90cc5 Reworded headline
rewrote the README file
fixed code when dealing with circular references
minor #145 rewrote the README file (fabpot)

This PR was merged into the 2.1.x-dev branch.

Discussion
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rewrote the README file

closes #126

Commits
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c572305 rewrote the README file
fixed changelog
fixed C tests
minor #146 fixed C tests (fabpot)

This PR was merged into the 2.1.x-dev branch.

Discussion
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fixed C tests

closes #131

Commits
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a26b44f fixed C tests
fixed Travis config for C tests
bug #147 fixed code when dealing with circular references (fabpot)

This PR was merged into the 2.1.x-dev branch.

Discussion
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fixed code when dealing with circular references

Fix for #120 (thanks @davedevelopment). At least, it's behaving "correctly" when there is a circular reference. Not sure if this is worth fixing, but that would make the PHP and C implementations behave in the same way as the C version already segfaults in such a case.

Commits
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52f5d09 fixed code when dealing with circular references
Fix compiler warnings