Constructors, evals, bump

• Two new internal services NewCalls and EvalCalls were added.
  If you're not using includes: - vendor/spaze/phpstan-disallowed-calls/extension.neon you'd need to manually add them to your phpstan.neon's services, check extension.neon to see what needs to be added
  This alone brings some breaking changes (see #25 for discussion) so I thought I'd bump the version number. Due to some rather poor choices in the past, the version is now 0.12 and I can't stay on that because of the changes. Going to 0.13 would be confusing because PHPStan 0.12 is still supported. So let's go to 1.0. I like what this does already so why not :-)
• Constructor calls (object creations) are now detected, just disallow Foo\Bar::__construct() even if there's no constructor defined in that particular class. Both new Foo and $a = 'Foo'; new $a; is detected. (#37, thanks @enumag for the test)
• Disallowed calls can start with a backslash (method \Foo::bar() instead of just method Foo::bar()) (#38)
• eval() is detected, did you know it's not a function but a language construct? (#36)
• Extra functions added to the bundled config files (#35):
  disallowed-execution-calls.neon includes popen()
disallowed-dangerous-calls.neon now also includes these:
  • apache_setenv()
  • dl()
  • posix_getpwuid()
  • posix_kill()
  • posix_mkfifo()
  • posix_mknod()
  • highlight_file()
  • show_source()
  • pfsockopen()
  • proc_nice()
  • putenv()
  • socket_create_listen()
  • socket_listen()