v5.2.0.0

Now we are fixing many bugs to use Jikka during contests!

Features:

• Use gcd/lcm semigroups on segment trees (#163 by @hotman78)
• Solve simple equations (#135 by @hotman78)
• Remove unnecessary parentheses from generated C++ code (#143 by @uta8a)
• Use assert macros in generated C++ code (#160 by @kmyk)

Bug Fix:

• Fix a bug of unpacking std::tuple and assignments (#165 by @riantkb)
• Fix calculation of arithmetic expressions (#138 by @hotman78)
• Fix reductions about all and any functions (#159 by @kmyk)

Documentation:

• Add docs/internal.ja.md (#122 by @kmyk)
• Add a gallery page (#129 by @kmyk)
• Fix some mistakes of documents (by @hotman78 @rsk0315 @zer0-star)

Tests:

• Add many solutions and test cases of AtCoder Beginner Contest to examples/ directory (#145 #170 by @uta8a)
  • Related to this, @uta8a has the repository uta8a/jikka-example which has results of analysis of many problems.

Refactoring:

• Add a parser of our core language and allows to write rewrite rules more intuitively (#133 by @kmyk)

Misc:

• Add scripts/add_test_cases.py (#149 by @kmyk)
• Fix scripts/add_test_cases.py (#166 by @uta8a)
• Fix scripts/pre-commit (#171 by @uta8a)
  • @uta8a also finds a bug of the formatter