fixed query, added vacuum, updates & optimizations

Author: lixas

.gitignore

@@ -0,0 +1 @@
+__pycache__/*

README.md

@@ -112,7 +112,7 @@ db_table.insert([{"name": "whothere", "password": "ohyeah"}, {"name": "whothere"
 db_table.find_row(5)
 db_table.update_row(300, {'name': 'bob'})
 db_table.delete_row(445)
-db_table.find_by_column_value("name", "bob")
+db_table.query({"name": "bob"})
 f = db_table.scan()
 f.__next__()
 

changelog.md

@@ -0,0 +1,32 @@
+# Changelog#
+## 2020-12-05 ##
+
+* Fixed method `Table.__return_query` so now querying by `tbl.query({"name": "Bob"})` works correctly. Expanded capability (read bellow). Backward compatibility left. **Note**: Value strings are Case Sensitive!
+* Make compatible with full python (windows, linux).
+* Table creattion method inherit `rows_per_page` and `max_rows` from database schema settings.
+* Do not increase `tbl.current_row` counter if data has not passed validation yet.
+* New method `tbl.vacuum()` to optimize pagefiles. Worth to use after some data has been deleted.
+* updated method `Table.__return_query` so now is possible to search by multiple keys and values. Imagine following **persons_table** data:
+    | fname | lname | age |
+    |---|---|---|
+    | John | Smith | 37 |
+    | Nicole | Smith | *None* |
+    | Kim | Smith| 7 |
+    | John | Lee | *None* |
+    | Nicole | Lee | 32 |
+    | Bart | Lee | 3  |
+    We want to get John and Nicole Smiths, but dont want all Smiths and no Lees. Following query `tbl.query({"fname":["John", "Nicole"], "lname": "Smith"})` and here is the result:
+    ``` python
+    [{'fname': 'John', 'lname': 'Smith', 'age': 34},
+    {'fname': 'Nicole', 'lname': 'Smith', 'age': None}]
+    ```
+    You may add any number of search parameter in your query and all of them will be `AND`. In sql definition upper search query represent following SQL:
+    ```sql
+    select * from persons_table where fname in ("John", "Nicole") and lname = "Smith"
+    ```
+* Changed `__insert_modify_data_file` so writing to files would be more efficient and faster in exchange in reliability if something unexpected happens. 
+* Annotated all function's parameters
+* Fixed `tests/test.py` file to correcttly calculatee current row in `check_current_row()` function
+
+`test/test.py` and `device_test.py` passed succesfully on
+> MicroPython v1.9.4-2922-gce1dfde98-dirty on 2020-11-26; ESP32 module with ESP32

device_test.py

@@ -7,7 +7,7 @@
     exec(f.read(), globals())
 """
 
-import mdb
+import micropydatabase as mdb
 import gc
 import time