Support block ROFT

[keurfonluu]

• Added: support for block ROFT (TOUGH3 v1.1 and above).

Reminders:

• [x] Run invoke format to make sure the code follows the style guide,
• [x] Add tests for new features or tests that would have caught the bug that you're fixing,
• [x] Write detailed docstrings for all functions, classes and/or methods,
• [x] If adding new functionality, unit test it and add it to the documentation.

[codecov[bot]]

Codecov Report

Patch coverage: 97.36% and project coverage change: +0.02 :tada:

Comparison is base (9a07b5f) 91.24% compared to head (6094bb7) 91.27%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #138 +/- ## ========================================== + Coverage 91.24% 91.27% +0.02% ========================================== Files 94 94 Lines 6031 6061 +30 ========================================== + Hits 5503 5532 +29 - Misses 528 529 +1 ``` | [Impacted Files](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu) | Coverage Δ | | |---|---|---| | [toughio/\_common.py](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu#diff-dG91Z2hpby9fY29tbW9uLnB5) | `95.65% <ø> (ø)` | | | [toughio/\_io/input/tough/\_common.py](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu#diff-dG91Z2hpby9faW8vaW5wdXQvdG91Z2gvX2NvbW1vbi5weQ==) | `100.00% <ø> (ø)` | | | [toughio/\_io/input/tough/\_helpers.py](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu#diff-dG91Z2hpby9faW8vaW5wdXQvdG91Z2gvX2hlbHBlcnMucHk=) | `95.34% <ø> (ø)` | | | [toughio/\_io/input/tough/\_read.py](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu#diff-dG91Z2hpby9faW8vaW5wdXQvdG91Z2gvX3JlYWQucHk=) | `96.06% <94.44%> (-0.06%)` | :arrow_down: | | [toughio/\_io/input/tough/\_write.py](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu#diff-dG91Z2hpby9faW8vaW5wdXQvdG91Z2gvX3dyaXRlLnB5) | `93.99% <100.00%> (+0.07%)` | :arrow_up: | | [toughio/\_io/table/csv/\_csv.py](https://codecov.io/gh/keurfonluu/toughio/pull/138?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu#diff-dG91Z2hpby9faW8vdGFibGUvY3N2L19jc3YucHk=) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Keurfon+Luu)

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Do you have feedback about the report comment? Let us know in this issue.