Allow HackTest v2.0

This release permits either HackTest 1.x or 2.x

2.6.2: permit hacktest 2

v2.6.2

allow hacktest 2

Permit HackTest 2.0

HackTest supports HHVM 4.8 - but recent fbexpects don't.

Allow in 2.5.x so there's a hacktest 2 + HHVM 4.8 combo that works

2.7.1: clean up error @silencing

No longer depends on the disallow_silence setting being turned off, so it can now be used from projects with stricter settings without causing Hack errors.

2.6.1: add `toContainSubstring()` and `toNotContainSubstring()`

This adds the new methods in 2.7 without changing existing methods.

In 2.7 and above, toContain() and toNotContain() are restricted to containers/traversables.

2.7.0: type safety, feature improvements (breaking changes)

• added toContainSubstring() and toNotContainSubstring()
• toContain() can now only be used on Traversables; use the new toContainSubstring() on strings
• toNotContain() can now only be used on KeyedContainers; use the new toNotContainSubstring() on strings
• toThrowWhenCalledWithArgs() has been removed; use toThrow() with a lambda instead
• toThrow() can now only be called if a callable with no arguments is provided
• toThrow() now returns the exception, making it more straightforward and readable to make additional assertions about the exception (such as the message or error code)
• toThrow() now supports Throwables instead of just Exceptions

2.6: target HHVM 4.13+, support currently nightlies (4.14-dev)

v2.6.0

remove accidentally-added hhconfig option

Un-deprecate `toEqual` and `toNotEqual`, using `===`

Undeprecate toEqual / toNotEqual (#14)

* Undeprecate toEqual / toNotBeEqual

These functions are back in style now, apparently.

* shim to Same instead of PHPEqual

* Add docblocks

v2.5.8: Support HHVM 4.10 and current nightlies (4.11-dev)

replace UNSAFE_EXPR with FIXME

Support HHVM 4.1 and current nightlies (4.7-dev)

• increase minimum version from 4.0 to 4.1
• remove direct usage of empty() which is no longer supported in 4.7-dev