Changed prerequistes for strings and loops. Added conditionals as prerequisite for strings. Added comparisons as prerequisite for loops. Rempved conditionals as prerequisite for loops (comparisons has conditionals as a prerequisite).)
Changed prerequistes for strings and loops.
Added conditionals as prerequisite for strings.
Added comparisons as prerequisite for loops.
Rempved conditionals as prerequisite for loops (comparisons has conditionals as a prerequisite).)

jmluy/xpython,jmluy/xpython,exercism/python,exercism/python