fix rounding error in timestamp

[jagdish7908]

Fixed calculation issues in parser and compiler

Parser

Output is incorrect for some timestamps if integers are added to floating point.

Sample timestamps for which current function was giving incorrect result
01:24:40.060

Compiler

floatNumber%1 without precision limit changes output

Sample timestamps for which current function gives incorrect result

00:19:59.529
00:19:59.539
00:19:59.549
00:19:59.558
01:24:35.275

[osk]

@jagdish7908 thanks for this, can you add a failing test for the example cases so we don't introduce a regression later on?

[jagdish7908]

@osk added test cases

[osk]

@jagdish7908 thanks! this is released in v1.9